Invader Zim: Enter the Florpus

Zim returns after a long absence, and Dib confronts him. Zim explains that his disappearance was intended to render Dib physically unfit to oppose him, and he hints at a planned Phase Two. However, Dib suspects there is more to Zim's scheme.

Zim reaches out to his leaders for guidance but realizes he has forgotten what Phase Two entails. The memory lapse creates a gap in his operative plan and raises doubt about the entire invasion. Without a clear target, Zim's mission falters.

Dib regains his physical fitness with Gaz's help, and Professor Membrane hands him a prototype device—the Membracelet—designed to channel positive energy from Earth's children. Membrane also expresses disappointment about Dib's persistent belief in aliens. Dib begins to see this new power as a means to stop Zim.

Dib confronts Zim and finds him depressed; both realize Phase Two is forgotten, and they learn the Irken Armada has no immediate plan to invade Earth. This revelation shifts the immediate stakes of the conflict. The tension between them softens as they reassess their odds.

Facing defeat, Zim chooses to surrender to Dib, who intends to present his captive to the world during Professor Membrane's keynote address. The plan hinges on the Membracelet to amplify the reveal.

During the address, Zim modifies the Membracelet to hijack the presentation. The lights go out, Membrane disappears, and Zim surfaces on stage in disguise, seizing control of the spectacle. Dib watches in stunned disbelief as his plan spirals out of control.

The next day, Dib and Gaz awaken imprisoned in their own home by Clembrane, a failed clone of their father, while Zim rakes in bracelets worldwide. The Membracelet distribution accelerates as more children wear them.

GIR's manipulation of the bracelets forces every child to hold hands, and Zim uses Minimoose and the bracelets' energy to teleport Earth into the Irken Armada's flight path. This ploy is meant to compel the Tallest to visit him.

The Irken Tallest arrive, irritated by the teleportation, and decide to destroy Zim and Earth upon reaching their destination. The threat escalates as the Armada closes in.

A Florpus rift opens in space-time, capable of consuming the planet and merging it with alternate realities. Zim ignores the danger and presses forward to greet the Tallest.

Dib and Gaz escape using Tak's spaceship and free Professor Membrane from Moo-Ping 10. Membrane reveals his robotic prosthetics and urges Dib that he already has his father's pride.

Dib fights Zim for control of Minimoose to stop the Florpus, with Membrane assisting in destroying Zim's robot army. After the Armada arrives and the Florpus collapses, Membrane teleports Earth back to its original location as the Armada dives into the Florpus. Back home, the family is reunited, but Zim nevertheless appears, boasting of his mission before being flattened by a falling pug launched by GIR.