Hideki has moved to the city from the country to enrol in Prep School in order to pass the college entrance exam. In the city, Hideki is amazed by the mobile computer units called Persocoms that almost everyone has. If only they weren't so expensive! Walking one night he comes across a cute persocon just lying in the trash and decides he should do his part for the environment and recycle her as his own.

Following the events from the previous episode, Hideki responds to Chii he also loves her. At this point, something triggers in Chii, and she flies out of the apartment window and onto the roof of the building. Zima and Dita, two advanced Persocoms who had been observing from a distance, wait nearby intending to stop Chii from launching her supposed hidden program that they fear will destroy all Persocoms.

Hideki is on his way to college when Chi discovers that he has forgotten his wallet. After she leaves the apartment, Sumomo and Kotoko find out that Chi has forgotten to wear underwear. They run after Chi to deliver the underwear to her, which results in a comical ending.