The first segment is based on "Xmas" (pronounced as "eks-mas"; a version of Christmas present in the 31st century), in which the long-extinct pine tree species is revived, but due to seed contamination grows out of control.
Each segment features recurring elements, including an environmental theme, a song, and ending in which most or all of the main characters either die or face certain death.
However, the seeds have been contaminated by a biological weapons repository neighboring the vault, causing pine trees to grow and spread at a rapid rate until they cover the entire Earth.
Though the trees seem beneficial at first, returning the planet to a lush, wildlife-filled state, their uncontrolled growth produces dangerously high levels of oxygen in the atmosphere.
Bender criticizes the crew for not celebrating his made-up robot holiday Robanukah from "Fear of a Bot Planet" and sings a song explaining it, detailing a tradition in which fembots must wrestle in petroleum oil for six and a half weeks.
Since all surface reserves of petroleum have been exhausted, the crew tunnels toward the Earth's core; the immense pressure crushes everyone to death except for Bender, who decides to take a nap.
Returning to the now-dilapidated Planet Express building, he is surprised to find the two fembots still wrestling in their original supply of oil and declares it to be a Robanukah miracle.
He then wishes the audience a happy holiday season on behalf of Gunderson's Unshelled Nuts as Amy dances in a costume advertising the product.