This Side of Paradise ( episode ) The " Enterprise " crew finds happiness at a colony where alien spores provide total contentment . Summary . Teaser . The arrives at the planet Omicron Ceti III , the site of a colony established in 2264 . Unfortunately , the " Enterprise " s mission is only to catalog its destruction under the bombardment of deadly berthold ray s , which were discovered after the colonists left Earth . Captain Kirk , Commander Spock , Doctor McCoy , Lieutenant s Sulu , DeSalle , and Kelowitz beam down to the planet ' s surface and discover to their surprise that Elias Sandoval and the other colonists are not dead after all . Act One . Sandoval and two other colonists are excited to see others than themselves ; they haven ' t seen other Human beings since they left Earth . Sandoval explains that the colony ' s subspace radio had malfunctioned and they did not have anyone with the expertise capable of repairing it . Kirk grimly notes that they did not come here because the radio was broken but Sandoval says they are glad the " Enterprise " crew are here nevertheless . He offers to show the colony to them . " " On pure speculation , just an educated guess – I ' d say that man is alive " " , McCoy tells Kirk . Spock notes that the berthold rays are deadly to all life on this planet – the colonists " should " be dead . The crew of the " Enterprise " would be safe on Omicron Ceti III for a week but not for four years , as the colonists have . As McCoy and Spock debate how the colony ' s inhabitants could possibly still be alive , Kirk tells the landing party that they had better find some answers first . In a house , Spock encounters Leila Kalomi , a botanist he had met on Earth six years prior . She had loved him , but he had been unable to return her love despite being half - Human . Sandoval tells Kirk , McCoy , and Spock that the colony ' s philosophy is that man should return to a life less complicated by machinery . Thus , the colony has no mechanical devices or vehicles and weapons . " " We have harmony here – complete peace " " , Sandoval proudly says . Elsewhere , anomalies in the colony are discovered by Sulu and Kelowitz , such as the total lack of any animal life on the colony , like cow s , pig s , horse s , and dog s . Alone together , Leila promises Sandoval to tell Spock their secret . Sandoval asks Leila if he would like Spock to stay with them and live as they do . " " There is no choice , Elias . He " will " stay . " " Later , during his examination of the colonists , McCoy is astounded to discover that every inhabitant is in perfect physical health , even to the point where childhood injuries have repaired themselves . He points to the example of Sandoval ' s multiple health problems prior to journeying to the planet , such as scar tissue found on his lung s that cannot be detected now or his removed appendix , which is somehow " back " in his body . Sometime later , Kirk tells Sandoval that Starfleet Command has just ordered him to remove the colonists from the planet but Sandoval tells Captain Kirk that they will not leave . Kirk says this is not an arbitrary decision on his part but Sandoval still says they are not leaving , " " it ' s entirely unnecessary " " , he says . McCoy reminds Sandoval of the deadly berthold rays currently bombarding the planet and their effect but Sandoval tells the doctor of their healthy lifestyle that is a plant based diet and that no colonist has of yet died . Kirk asks him how their animals have died and the colonists have not . Sandoval dodges the question and still refuses the captain ' s order to leave . Outside , Leila leads Spock towards a flowering plant , she says she was one of the first to find them . Spock is then blasted with spores . The spores cause Spock ' s emotional barriers to break down , making him drop his tricorder and react in physical pain , which quickly passes . He gets back up in a euphoric state and confesses his love for Leila , who says the Vulcan is now one of them . They kiss passionately . Act Two . When Kirk hails Spock with his communicator , his first officer responds casually and lacking any respect or formality for his commanding officer . McCoy notes that this behavior didn ' t seem like Spock at all . Kirk attempts to question Spock further , but Spock drops the communicator and again directs his attention to Leila . Concerned , Kirk follows the open com link , and finds Spock laughing and clowning around – actually hanging from a tree . When Kirk orders Spock to be placed under arrest , the Vulcan leads Kirk and his officers a short distance , stopping in front of one of the spore plants . Immediately , the spores blast Sulu and Kelowitz , who both exhibit the same euphoric behavior of the people on the planet . Meanwhile , DeSalle , already under their influence as well , infects Dr . McCoy , who begins beaming the plants aboard the " Enterprise " . Kirk decides to go back to the " Enterprise " . However , because Dr . McCoy had ordered about a hundred plants beamed aboard , the spores are carried throughout the " Enterprise " by the ship ' s ventilation system . He orders Lieutenant Uhura to contact Admiral James Komack at Starfleet . Lieutenant Uhura , under the spores ' influence herself , leaves the bridge to beam down , but not before completely sabotaging the communications station . Only short - range sensors , to be able to contact the crew on the planet , remain . In a fit of rage , Kirk throws one of the pod plants on the bridge over the helm console and storms out . Outside the transporter room , the captain discovers that his entire crew is beaming down to the surface and orders them to go back to their stations . Leslie , speaking for the deserting crew , refuses and openly admits his actions are mutiny against the captain . Act Three . Kirk returns to the planet to find McCoy , to the house where he finds Spock and Sandoval . Spock responds by saying McCoy went to " make something called a mint julep . " He goes on to explain the spores not only induce a feeling of total peace and euphoria , but they are also the reason that the colonists have been protected from the deadly berthold rays . Spock , able to act as a scientist notwithstanding still being under the influence of the spores , explains that the plants traveled through space until they landed on the planet , actually thriving on the berthold rays . The plants act as a repository for thousands of microscopic spores until they find a Human body to inhabit . In return , they give their host complete health and peace of mind : in short , paradise ; " " It ' s a true Eden , Jim . " " When Kirk hears that , he disagrees , stating that Humans weren ' t meant for that . He insists that man stagnates if he has no challenge to drive him and motivate him . But Spock says that Kirk simply doesn ' t understand now , but that he will come around eventually and really comprehend what they mean and join them . The bridge is deserted , save for the quiet beeping of the various stations running on automatic . Kirk enters and surveys his situation . He tries to call Scott in engineering , but receives no answer . Other sections of the ship are similarly deserted . Recording his log , he notes that while the " Enterprise " can remain in orbit for several months without a crew , he cannot pilot the ship alone , even with automatic controls . He realizes that he ' s ultimately been marooned aboard the " Enterprise " . Moving over to the helm station , Kirk laments on how big and quiet the " Enterprise " is without anyone aboard and wonders how he can possibly get his crew back ; what he can possibly offer , he rhetorically asks himself , against the paradise that the spores bring . Lost in thought , he forgets that he is sitting near the pod plant he threw earlier when it blasts him with a dose of the spores . He becomes just as mindlessly happy as the others and hails Spock to let him know that he finally understands and wants to join them after all . Returning to his quarters to pack , Kirk opens his safe and finds one of his medals . A look of frustration comes over his face and he refuses to take the medal with him . He angrily closes the box and immediately leaves his quarters . About to beam down to the planet , he suddenly gets hold of himself and becomes angry , yelling that he cannot leave the " Enterprise " , and , after slamming his fist down on the transporter console , he becomes himself again , free of the spores . He realizes that violent emotions and anger are what counteract the spores ' euphoria - inducing effects . Noting this cure for the spores in his log , Kirk also realizes that his plan to free his crew and the colonists from the spores ' effects and escape Omicron Ceti III comes with one potential danger : Spock . Knowing his first officer to be considerably stronger than a normal Human being and could kill him with his bare hands , Kirk decides to risk it . Kirk , pretending to still be under the influence of the spores , hails Spock and tells him that he would like some help in moving some of the ship ' s equipment that could be useful down on the planet . Spock offers to send a team , but Kirk says he thinks the two of them can handle it . Spock agrees and beams up , telling Leila he will return soon . However , upon returning to the ship , Spock is greeted with Kirk threateningly brandishing a metal pipe and calling him a " mutinous , disloyal , computerized , half - breed . " Spock thinks Kirk is joking , but , the captain persists and begins insulting Spock ' s parents and the entire Vulcan race . Spock pleads with Kirk to stop , but , he continues , now turning his attention to Leila and how Spock couldn ' t possibly love her , and that he is a freak who belongs in a circus , " right next to the dog - faced boy . " At this , Spock finally snaps and attacks Kirk , throwing him around the transporter room . Act Four . As he prepares to smash a small metal table over Kirk ' s head , Spock regains control of himself and is broken from the spores ' influence . He and Kirk set out to create a subsonic transmitter that will induce anger and intense emotions in everyone on the planet ' s surface via the crew ' s communicators , thus eradicating the spores . When Leila beams up to the ship to find out what happened to Spock , she tells him that she cannot lose him again . But Spock tells her that he has a responsibility to the ship , and to his friend the captain . He goes on to tell her that he is who he is , and that if there are self - made purgatories then we all have to live in them , that his can be no worse than that of someone else . Leila cries and then realizes that she lost not only Spock but the feeling the spores induced as well . However , she says that her feelings for Spock still have not changed and that she still loves him . The transmitter is activated , and fights break out across the colony , destroying the spores ' effects . Sandoval expresses regret , noting that they have not really accomplished anything in three years , as any progress they made was purely the result of the spores . He hopes that he and the other colonists can try again on another planet . As the " Enterprise " leaves Omicron Ceti III for Starbase 27 , McCoy cynically states that this is the second time Humans have been thrown out of paradise and Kirk responds jokingly that actually this time they just walked out on their own ; maybe they weren ' t meant for paradise , says Kirk , maybe they were meant to fight their way through , struggle and scratch for every inch of the way . Spock , on the other hand , realizes that his time with Leila on the surface was the first time he had ever been happy . Memorable quotes . " " It ' s like a jigsaw puzzle all one color . No key to where the pieces fit in . " " " " I have never understood the female capacity to avoid a direct answer to any question . " " " " Emotions are alien to me . I ' m a scientist . " " " " It didn ' t hurt us . " " " " I am not like you . " " " " I love you . I can love you . " " " " We ' re evacuating all colonists to starbase 27 . " " " " Oh , I don ' t think so . " " " " You don ' t think so , " what ? " " " I don ' t think so , " sir . " " " Spock . . . are you out of your mind ? You were told to report to me at once . " " " " I didn ' t want to , Jim ! " " " " Yes , I can see that . " " " " I thought you said you might like him if he mellowed a little . " " " " Ah yeah , Jimmy boy . Hey , I ' ve taken care of everything . All you gotta do is just relax - doctor ' s order . " " " " This is mutiny , mister ! " " " " Yes , sir . It is . " " " " Who wants to counteract paradise , Jim boy ? " " " " Man stagnates if he has no ambition , no desire to be more than he is . " " " " I ' m beginning to realize just how big this ship really is . " " " " No . . . NO ! I . . . can ' t . . . LEAVE ! " " " " All right , you mutinous , disloyal , computerized half - breed ! We ' ll see about you deserting my ship ! " " " " What makes you think you ' re a man ? You ' re an overgrown jackrabbit ; an elf with a hyperactive thyroid ! " " " " What can you expect from a simpering , devil - eared freak , whose father was a computer and his mother an encyclopedia ? " " " " Your father was a computer , like his son ! An ambassador from a planet of traitors ! The Vulcan never lived who had an ounce of integrity ! " " " " You ' re a traitor from a race of traitors ! Disloyal to the core ! Rotten . . . like the rest of your subhuman race ! And you ' ve got the gall to make love to that girl ! " " " " Does she know what she ' s getting , Spock ? A carcass full of memory banks who should be squatting on a mushroom instead of passing himself off as a man ! You belong in a circus , Spock , not a starship ! Right next to the dog - faced boy ! " " " " It isn ' t every first officer who gets to belt his captain . . . several times . " " " " I am what I am , Leila . And if there are self - made purgatories , then we all have to live in them . Mine can be no worse than someone else ' s . " " " " You never told me if you had another name , Mister Spock . " " " " You couldn ' t pronounce it . " " " " We don ' t need you . Not as a doctor . " " " " Oh , no ? Would you like to see how fast I can put you in a hospital ? " " " " You better make me a mechanic , then I can treat little tin gods like you ! " " " " I have little to say about it , captain . Except that for the first time in my life , I was happy . " " " " Well , that ' s the second time man ' s been thrown out of Paradise . " " " " No , no , Bones , this time we walked out on our own . Maybe we weren ' t meant for paradise . Maybe we were meant to fight our way through , struggle , claw our way up , scratch for every inch of the way . Maybe we can ' t stroll to the music of the lute . We must march to the sound of drums . " " Links and references . References . 2208 ; 2244 ; 2261 ; 2263 ; 2264 ; acre ; admiral ; agriculture ; ambassador ; antidote ; appendectomy ; appendix ; barn ; bean ; Berengaria VII ; berthold ray s ; biochemistry lab ; biology ; blood ; " Bones " ; botanist ; breeding ; butterfly net ; carcass ; circuit ; circus ; climate ; cloud ; computer ; contact signal ; court martial ; cow ; crop ; cure ; dead air ; death ; desertion ; dog ; dog - faced boy ; dorsal spine ; dragon ; drum ; Earth ; Eden ; elf ; emotion ; encyclopedia ; evacuation ; expedition ; farm ; first officer ; flora ; food ; foot ( measurement ) ; garden ; Georgia ; god ; grain ; ; handshake ; hide ; homing device ; horse ; inch ; inoculation ; insect ; itching powder ; jackrabbit ; jigsaw puzzle ; ; landing party ; livestock ; lobar pneumonia ; logic ; lute ; marooning ; mechanic ; medical record ; memory bank ; mint julep ; miracle ; mushroom ; mutiny ; nerve ; Omicron Ceti III ; Omicron colonists ; Omicron colony ; Omicron pod plant ; Omicron spore ; operation ; philosophy ; pig ; pill ; poetry ; potato ; pronunciation ; purgatory ; quarters ; radiation exposure ; rain ; rainbow ; rib ; Sarek ; scar tissue ; scientist ; serum ; shingle ; soil ; speaker ; standard orbit ; Starbase 27 ; Starfleet Command ; Starfleet Medal of Honor ; subsonic transmitter ; tail ; teacher ; textbook ; thyroid ; tin ; tonsil ; transmission pattern ; traitor ; tricorder ; vacuum ; vegetarian ; vehicle ; ventilation system ; Vulcanian ; ; weapon