When Ten buys an innocuous glass bottle from a scarecrow inventor in the trippy “4D Forest” then points it towards Lum, it sucks her in and shrinks her to just a few inches tall. She decides to use this mishap as an excuse to get Ataru to pamper her, but Ataru suspects something is up. When he overhears her owning up to it, he stashes her in a birdcage so he can (fail to) pick up chicks.
Ten, who “rushed” off at his normal leisurely pace to purchase a “big bottle” to restore Lum to her normal size, learns that the scarecrow has become disillusioned and has started to destroy all his bottles, he “rushes” to grab his scooter so he can actually rush with Ataru and Lum back to the forest before the last big bottle is smashed.
They just make it in time to restore Lum, by which time a tearful Ataru is relieved. Lum, who had finally decided she couldn’t trust Ataru, isn’t sure how to react to his affection, except that it’s what she wanted all along, so I guess it worked out. She punishes him by making him wear the birdcage on his head while they walk to school arm in arm.
The next segment features an adorable little sentient fox who takes one look at Shinobu and falls desperately in love, only to find her walking with Ataru. Identifying his rival, the fox disguises himself as a diminutive Ataru and goes to school, convincing everyone that something has happened to Ataru until the real Moroboshi arrives with Lum.
The fox’s gig is up, and the boys go after him, worried he’s a fox demon trying to possess Shinobu. But it’s Shinobu herself who stops them, insisting he doesn’t mean any harm and was only paying her back for picking him up and taking him to the authorities when she thought he was a lost pet. The fox then transforms into a miniature version of their teacher, with which all the students are on board.
After the credits, a show-within-a-show called the Tomo-1 Queen Contest begins, whittling down eight candidates for the title of Queen of the School down to Lum, Shinobu, Sakura, Ran, and Ryuu, to be picked up next week in at least part of next week’s finale. What Urusei Yatsura may have lacked in serialized development, it mostly makes up for with its vast variety of characters, entertaining situations, effective voice performances, and slick retro visuals.