WALL•E is the last robot left on an Earth that has been overrun with garbage and all humans have fled to outer space. For 700 years he has continued to try and clean up the mess, but has developed some rather interesting human-like qualities. When a ship arrives with a sleek new type of robot, WALL•E thinks he’s finally found a friend and stows away on the ship when it leaves.
One day, WALL-E discovers a growing seedling. Later, a spaceship lands and deploys EVE, an advanced robot probe sent from the BnL starliner Axiom to search for vegetation on Earth. WALL-E falls in love with the initially cold and hostile EVE, who gradually softens and befriends him. When WALL-E brings EVE to his home and shows her his collection, she sees the plant, automatically stores it inside herself, and goes into standby mode waiting for her ship to retrieve her. WALL-E, not understanding why EVE seems to have shut down, tries numerous methods to reactivate her. When EVE’s automated ship returns and collects EVE, WALL-E clings to its hull and thus travels through space to the Axiom, which is hidden behind a nebula.
On the Axiom, the descendants of the ship’s original passengers have become morbidly obese after centuries of microgravity effects and relying on the ship’s automated systems for their every need. The ship’s current captain, McCrea, leaves most of the ship’s operations under the control of its robotic autopilot, AUTO.