While Chii is on her way to work, she notices the third part of the book series "A City With No People" on the shelf of a bookstore. While she flips through the pages, she is grabbed from behind and is kidnapped. Hideki comes home from prep school and returns to find Chii missing.

Chii is still missing, and Hideki is enlisting as much help as he can to find her. A strange e-mail image gets sent to him and Shinbo from an untraceable email address. It turns out that this is a map for the house of Chii's abductor, Dragonfly, and he is carrying out research to find out what Chii is.

Hideki and Chii help Shinbo move out of the apartment to live with Ms. Shimizu (who is now married to him). Then they arrive at Minoru's house, where he is trying to find information on Chobits. Minoru, who has not been sleeping enough, passes out, and Yuzuki (Minoru's custom-made Persocom) decides to try to hack the Chobits database herself.

Hideki takes Chii to work. There, Chii changes into the wrong uniform. Ueda tells her it's the wrong one, but before she goes to change, Yumi sees her wearing it from outside the shop and runs away crying. As it turns out, Yumi used to work at the store, and that had been her uniform. When Yumi was working for Mr. Ueda, the two had started falling in love, but when Yumi learned about Mr. Ueda's previous marriage to a Persocom, she concluded that he believed Persocoms to be superior to humans, so she quit her job at his bakery and broke off the relationship.

Ms. Hibiya secretly leaves Chii the fourth book in the "A City With No People" series. Hideki meets with Shinbo and shares his feelings for Chii. Ms. Hibiya reveals to Hideki that her husband was the one to create Chii and the other mysterious girl, Freya. She tells Hideki that Chii used to be called Elda and, like her sister, was created to be loved and fall in love with others. Chii then tells Hideki that she loves him.

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.

This episode is another recap of the events that have happened in the series, framed by Ms. Hibiya preparing a dinner party for everyone in anticipation of hearing the results of Hideki's college entrance exams.