Cocky Spike Spiegel and the crew of his spaceship, Bebop, an intrepid band of bounty hunters, land on Mars in the year 2071 chasing an enormous cash reward. The four-person team, also including looming cyborg Jet Black, fearless Faye Valentine and tech expert Edward, are in search of ex-military officer Vincent. The former hero has become a biological terrorist with an arsenal of devastating nano-bots that he'll let loose on Alba City on the night before Halloween if his demands aren't met.