When 11-year-old Wataru's father leaves home and his mother is taken ill to the hospital, he decides to change his fate by traveling through the door shown to him by his friend Mitsuru. In a land of magic and monsters, Wataru must summon all his courage and embark on a journey with several comrades to meet the Goddess of Destiny and change this "mistaken fate."

Assigned to protect a royal procession transporting a powerful artifact called the "Ouin," Squad 10 gathers in the human world as Captain Toushirou Hitsugaya and Lieutenant Rangiku Matsumoto observe the area cautiously. However, the caravan is suddenly struck by a group of assailants who wreak havoc on the procession, stealing the Ouin in the process. After a brief clash with one of the attackers, the distraught Hitsugaya pursues the escaping thieves, leaving behind Matsumoto and the disoriented squad. Following the incident, the Seireitei brands Hitsugaya a traitor for abandoning his post and puts Squad 10 on indefinite lockdown.

In the human world, Ichigo Kurosaki is investigating a spiritual abnormality when he stumbles across the injured Captain, but is caught off guard when Hitsugaya suddenly flees. Soon learning of the situation, Ichigo, Rukia Kuchiki, Renji Abarai, and Matsumoto set off to prove Hitsugaya's innocence and uncover the truth behind the theft of the Ouin. Meanwhile, a ghost from Hitsugaya's past haunts his thoughts as he chases down the true culprit.

[Written by MAL Rewrite]

These are the recollections of a group of men who bet everything on their bicycles. The central pillars of their respective teams, the third years. New stories revealing their pasts are about to begin!

The Urusei Yatsura story comes to a climax in this animated retelling of the final Manga story (although not the final movie). Lupa, yet another one of Lum's fiancés, arrives on the scene, and Lum and Ataru have to repeat their game of tag in order to prevent the Earth from being destroyed.

All Ataru has to do to win is say "I love you" the three words he has steadfastly refused to say to Lum. Will he admit his true feelings and save the Earth? Or will his pride doom it to destruction?

(Source: AniDB)