The crew members encounter a bizarre alien with the power to change their sexual characteristics.
Bender gains the ability to self-replicate, threatening to overrun Earth with vast swarms of copies of himself.
After a bungled Earth invasion, alien leader Lrrr faces a midlife crisis.
Leela leads an army of underground mutants in a rebellion against the surface people.
In this festive three-part episode, the Planet Express crew races to preserve the traditional practices of the classic holidays of Xmas, Robanukah and Kwanzaa.