After gambling away all the money she obtained, Faye finds a mysterious suitcase aboard a derelict spaceship. Meanwhile, Spike and Jet pursue a bounty on Twinkle Murdoch, the leader of the Space Warriors, a group of eco-terrorists armed with a biological weapon that can transform humans into apes. However, faced with the threat by Murdoch's sons of releasing the virus on Ganymede if she isn't released, the Ganymede government cancels the bounty and forces the Bebop crew to release her. When Murdoch and her sons renege on the deal and launch the virus anyway, Spike and Faye pursue her through the hyperspace gateway. They destroy two of the three missiles, but miss the third one, prompting the Ganymede government to shut down the spacegate, stopping the missiles by trapping them in hyperspace. Spike and Faye narrowly escape the gate before it closes, but Murdoch and sons are trapped. A container of the virus that Faye recovered from the suitcase and was subsequently slipped into Murdoch's pocket by Spike shatters, turning her and all her sons into monkeys. With the bounty lost, Faye decides to stay on the Bebop with Spike and Jet.