In the small town of Seacliff, Wash., a child's letter to Santa Claus captures the nation's attention. When the little boy, Chris, writes that he wishes to leave this world so he will no longer be a burden to his divorcing parents, a race begins to find him before he harms himself.

A Time Prophet predicted that Kai would be the one to destroy the divine order in the league of the 20,000 planets, someday that will happen, but not today. Today a cowardly security guard, an undead assassin, a female with a body designed for sex and a robot head madly in love with her all make up the crew of the spaceship Lexx, the most powerful weapon in the two universes.