Farscape: Season 4, Episode 1

4 - 1: Crichton Kicks

Crichton, who is now aboard a dying Leviathan named Elack, works on his theories of wormhole physics. But when a female alien named Sikozu lands on the ship, she is followed by a squad of Grudek mercenaries who want to harvest the Leviathan's neural cluster tissue. Crichton struggles to save his new home but gets some welcome help when two old friends rejoin him.