Before and After ( episode ) Kes finds herself in temporal flux with her consciousness moving back in time through various episodes in her life up until her birth . Summary . Teaser . A blur slowly transforms itself into a view of sickbay on the from a lying position , with a hairy - headed doctor known as Dr . van Gogh standing over . The year is 2379 and Kes has nearly reached the end of her lifespan . Act One . A young Ocampan boy approaches her , giving her a present that he apologizes for delivering so late . Kes has no idea what the boy is talking about or who he is but before she can do anything , she begins to get cold and a blinding flash hits her . After the flash subsides , she finds herself in her quarters , lying in her bed . Hearing voices while in her bed , she gets up and walks into her room , where she finds a young woman and the boy she saw earlier there . The young woman is wearing a blue sciences division Starfleet uniform and identifies herself as Linnis , and the young boy as Andrew , her grandson . Andrew is startled when she comes in , because he is still working on her birthday present and does not want her to see . She starts to explain her dream to Andrew , but Linnis decides they should go to sickbay . On the way to sickbay , Kes finds out that Linnis is her daughter . When they arrive in sickbay the doctor discovers that over 98 % of her memory engram s have been lost . The Doctor is in the process of perfecting a device he invented that he believes will extend her lifespan for at least another year . Tom Paris and Harry Kim arrive in sickbay . Confused as to what is going on , she just tries to explain , despite her situation being dismissed as being part of the morilogium , when another flash appears and she suddenly finds herself in the mess hall . It is now Kes ' ninth birthday party and everyone is singing " For She ' s a Jolly Good Fellow " to her . Neelix , wearing an operations division gold Starfleet uniform , comes out from behind the galley with a Jimbalian fudge cake with candles on it . Kes smiles a little , but it ' s clear she ' s even more confused . Act Two . Startled , she blows out her candles , and Tom kisses her on the forehead . She runs into Andrew , who apologizes because he doesn ' t have a present for her yet . She approaches The Doctor and tells him her situation with the but The Doctor is amazed when she mentions the bio - temporal chamber , because he had just come up with the idea that morning and had meant to tell her about it as a birthday surprise . Captain Chakotay checks in on Kes in sickbay , wondering what is happening to her , as are Paris and Kim . This time she has lost 95 % of her memory presumably because she is retaining her memory of the original future events . Kes explains that she at first remembers Andrew giving her a belated birthday present , then later Andrew working on that same present and then just recently Andrew apologizing for not starting on her present . Chakotay surmises that there must be a time paradox at work , while The Doctor believes that Kes must have developed a form of precognition that allows her to see future events that have not yet happened . Chakotay decides that he and Paris will scan for any temporal anomalies that may be causing Kes to experience these events . Sometime later , Paris meets Kes in their quarters where they go through " Voyager " s computer records . He reminisces about their life together as man and wife , which Kes cannot remember much to Paris ' sorrow . Going through her records , she finds an incident on stardate 50973 ( 2374 ) , where a fragment of a chroniton torpedo , used by a race called the Krenim , leaked radiation through the hull of " Voyager " , irradiating the entire crew with chroniton radiation . This was what Paris had called the beginning of the " Year of Hell " . Kes also learns during this period that Captain Kathryn Janeway , assistant chief engineer Joseph Carey , and chief engineer B ' Elanna Torres died in this attack . Paris had a sense that the chroniton radiation may have something to do with Kes ' current situation . But before they can make progress on it , Kes again experiences a shift through time – back to her quarters , holding an infant , Andrew , her new grandson . Harry Kim , the father , takes a photo of Kes with her granddaughter and he and Paris discuss the strangeness of he being Paris ' son - in - law and Paris being a grandfather . After asking Kim for the current stardate ( 56947 ) , she leaves her quarters for sickbay . Now thoroughly perplexed , she runs straight to The Doctor , to whom she must again describe her dilemma , using the information she had gleaned from her previous jumps through time . The Doctor says he inoculated the entire crew against the radiation but maybe the bio - temporal chamber reactivated the dormant chroniton particle s in Kes ' body and started her backward trip through time . Unfortunately , The Doctor says she could jump back even to a time when she didn ' t exist . Act Three . Now it ' s stardate 55836 . 2 . The crew gets Kes to sickbay , where The Doctor creates a force field that might keep Kes in temporal sync with them , but it fails and Kes jumps back again – to a Type 8 shuttlecraft , where she is giving birth to Linnis . After Paris assists in the successful delivery of their child , Kes and Paris go back to " Voyager " but then the ship comes under attack . After the attack is over , Kes sits on a cot in the mess hall , while Captain Chakotay tries to understand what is happening . Before anyone can do anything , she begins to shift , and Kes reverts back to – the first Krenim attack . This time she is on the holodeck in the Paxau Resort holoprogram and she begins talking to Paris . Before she can get very far with what is wrong with her , B ' Elanna Torres arrives and she and Paris exchange a kiss . Kes quickly realizes that this is B ' Elanna Torres but then the ship comes under attack . Kes goes to the bridge and realizes that this is the Krenim she had been worried about . When she figures out who Captain Janeway was , Kes gives her information about the torpedoes being in a state of temporal flux and being able to pass through the shields . Suddenly , the ship is rocked by a torpedo and the bridge ' s engineering station explodes , killing Janeway and Torres . Act Four . With The Doctor offline due to the attack , she goes to where the fragment of a chroniton torpedo was lodged in a Jefferies tube to find out the exact temporal variance frequency of the missile , inadvertently exposing herself to the chroniton radiation . She smiles as she finds the exact frequency – 1 . 47 microseconds – before she passes out in the tube and reverts yet again – to the present time period , 2373 . Once here , she tells Janeway about the Krenim in the future , then informs The Doctor that he needs to create a bio - temporal chamber to purge her system of the chroniton particles . If he is successful , her jumps will stop . He creates it , and places her in it , having Torres bombard Kes with anti - chroniton particles . As her chroniton count begins to drop , she experiences another jump – and arrives on her first day on " Voyager " . Her meeting with Janeway in the captain ' s ready room goes awry as she explains that she doesn ' t belong here , before another rapid jump takes her back to one year old – below ' s surface when she was a young girl . Act Five . Kes tries to tell her father about her eventual destiny of leaving for the surface of Ocampa and joining the crew of " Voyager " , but he assumes she ' s just fantasizing about exploration . In 2373 , her chroniton count is almost gone . Kes jumps back to the day she was born . She then becomes a fetus , then a simple egg cell and finally vanishes completely . But just as she does so , she reappears as an egg cell , then rapidly matures into a fetus , is born to her mother and then her final flash transports her back to 2373 , where The Doctor tells her he has purged her chroniton count completely and she is a healthy three years and two months old . On the holodeck in the resort holoprogram , " Voyager " s senior staff pushes Kes to tell them about the future but Tuvok rightfully points out that what Kes experienced was only one possible future , as her actions at each point in time likely altered the future . Kes does promise to write a report to give Captain Janeway all her information on the Krenim but decides to keep the rest to herself . When she leaves the holodeck to begin writing it , Janeway tells her she does not have to do it " this " very moment . " " If there ' s one thing that this experience has taught me , captain , is that there ' s no time like the present " " , Kes says while the crew laughs . Log entries . " ( log entry made by Captain Chakotay ) " Memorable quotes . " " You said I was your finest friend . " " " " Well , I ' m . . . not sure I ' ve ever said that " exactly " , but that doesn ' t mean it ' s not true . " " " " It ' s good to see that old lung is still working , Kessie . " " " " So , how does it feel to be a grandfather ? " " " " A lot better than it does to have " you " for a son - in - law ! " " " " Doctor , you ' ve lost your hair ! " " " " I beg your pardon ? " " " " I ' m sorry , I know this is going to sound strange to you both but I don ' t belong here . " " " " But , we discussed this ! " " " " So , l ' m going to become a security officer . How about that ? " " " " Fortunately , Mr . Neelix , what Kes has been describing is merely one possible future . On each occasion that she jumped to a previous time , her subsequent actions most likely altered the future from that moment on . " " " " Good point , Tuvok . Maybe l ' ll turn out to be Chief Security Officer . " " Links and references . References . 47 ; amnesia ; " angla ' bosque " ; anti - chroniton ; best man ; Beta Quadrant ; biobed ; bio - temporal chamber ; biotemporal field ; biotemporal flux ; calorie ; ; champagne ; chief security officer ; chroniton ; chroniton radiation ; chroniton torpedo ; diaper ; engram ; entropy ; evasive maneuvers ; holodeck ; humor ; hypothalamic scan ; inoculation ; Jefferies tube ; Jimbalian fudge ; Kazon ; kilodyne ; Krenim ; Krenim warship ; medical tricorder ; mess hall ; MeV ; microsurgery ; molecular scanner ; " morilogium " ; ; Ocampa ; Ocampa ( planet ) ; parametric frequency ; precognition ; radiation poisoning ; red alert ; replicator ration ; röntgen ; senility ; sickbay ; son - in - law ; tactical sensor ; tea ; telepathy ; telekinesis ; temporal flux ; temporal sync ; temporal variance ; toast ; tricorder ; ; Vulcan ; wedding ; wedding reception ; Yattho ; " Year of Hell "