Futurama: The Beast with a Billion Backs

Fry enters the anomaly during Zapp Brannigan's failed military assault. When Kif is killed in the battle and the military plan falls apart, Fry sees an opportunity to slip through the anomaly into the unknown on the other side. He's motivated by curiosity and possibly a desire to escape the failing situation, though his reckless decision-making is consistent with his character throughout the series.

Earlier, Bender's probe demonstrated that the anomaly reacts violently to electronic contact but allows living beings to pass through.

Yivo is a colossal, one-eyed, tentacled alien entity from another universe that emerges through the rupture. Initially, Yivo's tentacles begin attaching to beings across the universe, and Leela discovers these tentacles are actually reproductive organs, Yivo's original plan was to mate with everyone in the universe. However, Yivo later claims it developed genuine affection for the universe and wants a relationship rather than just reproduction.

The anomaly itself was described as a tear in reality leading to something of unimaginable scale.

After returning from Yivo's universe with a tentacle attached to his neck and publicly advocating that everyone should 'love the tentacle,' Fry becomes a central figure in the new religion worshipping Yivo. His role as pope likely stems from being one of the first humans to have direct contact with Yivo and his enthusiastic, vocal support of the entity, his sincerity and prominence within the crew make him a natural leader for the new faith.

Fry's return with a tentacle and his loud proclamation set the stage for the religious movement.

Yivo's tentacles are actually reproductive organs, and once they begin reaching through the anomaly, they attach to people across the universe. The tentacles are made of electro-matter, which makes them impervious to conventional weapons. Everyone gets attached because the tentacles are essentially propagating the species, the attachment is Yivo's method of reproduction across the universe.

Fry's tentacle attachment upon return demonstrates that the tentacles can bond with humans.

After Leela publicly reveals at a universal gathering that Yivo's tentacles are reproductive organs, Yivo admits its original plan was merely to mate with everyone but now claims it has developed genuine affection for the universe. Yivo then removes its tentacles as a gesture of love and commitment to a real relationship rather than simple reproduction. This leads to a tentative peace and a mass dating ritual.

Leela's examination of the tentacle fragment earlier hinted at its true biological nature.

Bender makes a deal with the Robot Devil to create an army of robots in exchange for Fry's first-born child. This reveals Bender's selfish and opportunistic nature, he's willing to exploit his friend's future child for personal gain and power. The deal happens as humanity begins leaving Earth to live with Yivo, leaving Bender feeling abandoned and desperate to take action.

Bender's jealousy over Fry's relationship with Yivo and his loneliness as people leave Earth set up this darker motivation.

After Yivo removes its tentacles and declares its love for the universe, many beings choose to leave Earth and their original lives to be with Yivo in its universe. The mass exodus represents people choosing the new, exciting relationship with Yivo over their old lives. This abandonment leaves Bender alone on Earth and creates the dramatic context for the final confrontation.

The tentacle attachment and subsequent religious movement prepare the way for this mass migration.

After Bender's failed harpoon attack uses electro-matter from Fry's letter to trap Yivo, Yivo feels betrayed by Fry's broken promise. The electro-matter and broken trust cause Yivo to withdraw from its relationship with the universe. Yivo then finds solace with Colleen, who was Fry's former girlfriend, and they return together to the other universe, effectively closing the anomaly and ending the crisis.

Fry's letter containing electro-matter was established earlier as a critical plot element.

Zapp Brannigan leads a military assault against the anomaly that ends in disaster, with Kif being killed in the process. The assault fails because the anomaly and Yivo's presence cannot be countered by conventional military force, Yivo's electro-matter composition makes it impervious to weapons. The failure demonstrates the inadequacy of military solutions to cosmic-level threats.

Farnsworth's earlier discovery that electrical objects are repelled by the anomaly foreshadows technological weapon failures.

When Yivo admits that mating with everyone was its original plan but now claims genuine affection, it demonstrates this changed intention by resurrecting Kif. This act serves as proof of Yivo's ability to give life rather than just reproduce, a demonstration of genuine love and power beyond mere reproduction. The resurrection also allows Kif to return to Amy, resolving that relationship thread.

Kif's death during the military assault created emotional stakes that the resurrection addresses.

Leela rejects Fry's romantic advance because she realizes he's using her as a rebound after his relationship with Colleen ended. Fry's attempt to immediately pursue Leela following the collapse of his relationship with Colleen makes it clear he's not genuinely interested in her, he's just looking for comfort. Leela's rejection demonstrates growth in her character and understanding of healthy relationships.

Fry's pattern of moving from one relationship to another (his brief relationship with Colleen) establishes his rebound behavior.

Fry made a promise to Yivo (contained in a letter lined with electro-matter), but when Bender orchestrates the harpoon attack to pull Yivo into their universe, the attack uses that same electro-matter from Fry's letter. This betrayal, using something Fry gave Yivo as a weapon, coupled with broken trust causes Yivo to end the relationship and leave with Colleen. The electro-matter trap backfires because it was directly tied to Fry's promise.

Fry's letter to Yivo was established as containing electro-matter, making it both a token of affection and a potential weapon.