Hiyoko Hoshino (Aika Hirota) dreams of becoming a princess of the cookie world. One day, she is sucked into a donut hole and arrive in an animated world. She meets a girl named Tamako-chan and the creature Kokkubo. Hiyoko Hoshino visits the animation world everyday, but Tamako-chan dwells in Hiyoko Hoshino's body. Then, Tamako-chan enters this world and they begin to live in turns.

Tamako chan and Kokkubo

Doctor Shiro Kubo, whose family had a severe accident leaving the mother in a coma, is called to treat a strange disease. His daughter is suspicious of the woman who claims to be her mother after leaving the coma. Who is the woman who pretends to be her mother? A father must do everything he can to bring tranquility to his family.