Mystery of a Thousand Moons " Mystery of a Thousand Moons " is the eighteenth episode of of the " " television series . It is the eighteenth episode of the series overall . It is the second part of the 1 - hour special that aired on February 13 . Official description . " The fatal Blue Shadow Virus is released , infecting Ahsoka , Padmé and many Clone Troopers - and giving Anakin and Obi - Wan just 48 hours to find the antidote on a mysterious planet from which no visitor has ever returned . " Plot summary . Obi - Wan and Anakin prepare to transfer Dr . Nuvo Vindi to Theed for trial . Padmé and the clones discover that one of the virus bombs is missing the container that held the Blue Shadow Virus , meaning that if the wrong hands have possession of the virus ( in this case , Vindi ) , it can still be released , and they sound the alarm . Two clones search for Vindi ' s servant droid in the bomb room . The droid sneaks into the room behind them and inserts the virus into a bomb . Before the clones can stop it , the droid sets off the bomb , and the virus starts to spread through the complex . Rex , Ahsoka and the clones manage to make it into the safe room . Ahsoka briefs Anakin on the virus ' release , and he informs Padmé . She sets off with Jar Jar in their EVA suit s to find Ahsoka and prevent any remaining droids from escaping the lab and releasing the virus onto the planet . Anakin tries to wrest the antidote out of Vindi , but Vindi taunts him , stating that his job was to manufacture a plague , not cure it . Obi - Wan manages to convince Anakin to lay down his lightsaber , and they depart for Theed . Ahsoka , Rex and the clones discover that a small portion of the virus managed to get into the safe room before the door closed and they were thus contaminated . Padmé and Jar Jar , summoned by Ahsoka , open the door to the safe room , and she and Ahsoka take up the task of destroying the droids before they can ascend to the surface of Naboo . During a struggle in one of the corridors , Padmé rips a hole in her Envirosuit after tackling Jar Jar to save him from blaster fire and is thus affected by the virus as well . Anakin , Obi - Wan and Vindi arrive in the hangar bay , and they meet up with Typho . Vindi is escorted away , and Typho tells Anakin and Obi - Wan that he may have found an antidote : Reeksa root , found only on Iego , in the World of a Thousand Moons , which happens to be Separatist - controlled space . Typho mentions that it ' s " suicide " , but Anakin and Obi - Wan head off in the " Twilight " anyway . Anakin and Obi - Wan approach Iego , but not before passing through a massive ship graveyard in its orbit . As they land , they find strangely disfigured droids with mixed - up parts , all saying , " Welcome to Iego " . A boy approaches them and introduces himself as Jaybo before going over to lie in a hammock strung between the legs of two Vulture droids , with the retrofitted battle droids attending him . Jaybo explains that when the Separatists left , they left a lot of their droids behind , and he simply reprogrammed them to serve him . When Obi - Wan and Anakin inquire about the Reeksa root , Jaybo mentions that the system is " haunted " and no one gets off the planet , since Drol , the phantom ruler of Iego , destroys anyone attempting to leave . According to Jaybo , fifty of the best pilots in the galaxy tried , and none made it alive . Anakin and Obi - Wan descend a cliff , while Jaybo shouts down to not touch the vines , because the plants " don ' t like it " and have teeth . A Xandu appears , and the two Jedi grab ahold of it . It takes Anakin and Obi - Wan down to the bottom , and Anakin begins to hack away part of a root while the Reeksa plant awakens . Anakin and Obi - Wan manage to fend off the Reeksa and ascend the cliff . Jaybo leads them to Amit Noloff , who tells the Jedi that the ghost of Drol is preventing them from leaving the planet . When the Jedi don ' t believe him , he shows them a hologram of Taquito , a friend of Jaybo ' s , being electrocuted before his ship exploded . Anakin and Obi - Wan attempt to leave Iego in the " Twilight " , but as they pass through the debris field , sensors activate an energy field that prevents them from getting very far from Iego , and they return . Obi - Wan theorizes that the Separatists installed the energy field to prevent the inhabitants from leaving the planet . As they land , Obi - Wan and Anakin receive a hologram from Ahsoka and Padmé , both appearing parched and weak . Ahsoka weakly tells them that they have destroyed all the droids in the compound and that Naboo is safe from further contamination . Padmé asks Anakin to promise her that no one will ever open the bunker , and starts to say " I love you " , but the hologram is cut off . As they walk out onto the platform , Anakin starts to panic , having realized that Ahsoka and Padmé are dying from the effects of the virus . He tries to rush and find a solution to getting past the energy field , but Obi - Wan has an idea and manages to calm Anakin down . The Jedi call a meeting with the citizens of Iego . Obi - Wan tells them that Drol is not a ghost , but a Separatist security system . He asks if anyone inhabited Iego ' s moon before the Separatists arrived , and an Angel enters the room . She tells the Jedi that they were a peaceful people before the Separatists arrived and stole their home : the moon of Millius Prime , and Anakin theorizes that the primary node of the energy field must be near Millius Prime . Obi - Wan notices Vulture droids in another room , and he asks Jaybo to reactivate them so that Artoo can fly them via remote control . The Vultures are activated , and after Jaybo transfers control of the droids to Artoo , they launch and follow the " Twilight " into the ship graveyard . The laser field activates , and Artoo attempts to send the Vulture droids into the laser emitter , but they are destroyed . Obi - Wan fires at the generator , and the energy field explodes . Anakin mentions to Jaybo that he will need new Vulture droids , as all were destroyed , but Obi - Wan tells them that they are free to leave Iego whenever they choose . The " Twilight " immediately jumps into hyperspace for Naboo . LAAT / is land at the lab , and stretchers bearing Padmé , Ahsoka , Rex and the rest of the clones are transported onto the gunships . Anakin and Obi - Wan find the others weak from their ordeal , but thanks to the antidote they are expected to make a swift recovery . Glad about the outcome , all commend each other for their achievements . Behind the scenes . This is the first episode of the entire series to not receive a leading into it on StarWars . com since it happens immediately after the previous episode . Originally , the Xandu was to be devoured by the Reeksa plant .