Tsubasa Reservoir Chronicle: Season 1

When Syaoran returns to his home for a change of clothes after studying the ruins, he meets his dearest and closest childhood friend Sakura, the princess of Clow Kingdom. She convinces him to stay longer, and the two wander the town shopping together. At the end of their excursion, she attempts to confess her love for him, but is interrupted and forced to return to the castle. When Syaoran returns to the ruins, he is surprised to find Sakura there. A mysterious force begins to draw her into the wall and causes her memories to manifest themselves in the form of feathers. When he pulls her to safety, her memories scatter across the dimensions. The priest Yukito tells him to seek out the help of the Dimensional Witch and sends the two to the dimension in which she resides. Upon arriving there, two others soon follow: Kurogane who is exiled from his dimension for killing excessively and Fai D. Flourite who is running away from the king of his dimension.

Transported to the modern day Japan, Syaoran, Kurogane, and Fai ask the Dimensional Witch, Yuuko Ichihara, to grant their wishes. Syaoran wishes to travel to many worlds to restore Sakura's memories. Kurogane wishes to return to his own world. Fai wishes to travel to a world that is not his own so as to avoid meeting his king. Yuuko tells them that although their intentions are different, their wishes are the same. In order to have their wish granted, each must pay a price. She asks Syaoran to pay with his relationship with Sakura which would result in Sakura losing her memories of Syaoran, Kurogane to pay with his sword Ginryuu, and Fai to pay with the tattoo on his back. Though hesitant, each pays their respective price, and in return she gives the group a white creature named Mokona Modoki who holds the power to cross to random dimensions. The group sets off to another dimension where a gang war is about to commence between two groups led by Kanio and Shougo respectively who use a power called Kudan that can manifest itself as a familiar. A boy named Masayoshi finds them and brings them to safety. When Fai gives Syaoran one of Sakura's feather, taking it off Syaoran's shirt, the feather is blown by a stray blast. After running into the fray to retrieve the feather, Syaoran finds that he too possesses the power Kudan and interferes with the fight.

Sorata Arisugawa and Arashi Kishu find Syaoran, Fai, Kurogane, and Sakura (still unconscious but better) and take them to their apartment building. After some rest and less suspicious clothes, the three go around town looking for Sakura's memory fragments. However, Kurogane spots someone who looks like Princess Tomoyo and chases after her. After losing sight of the girl as well as Syaoran and Fai, Kurogane meets the gang from before and a fight ensues.

Sakura is awake and is checking out the town. However, she wakes up without Syaoran, Fai, Kurogane, and Mokana knowing it until it was too late. Things get worse when the leader of the invading gang recognizes her from his encounter with Syaoran and concocts a devious scheme.