Tamako lives with her Mom who runs a beauty shop and a young brother, a high school student. When she was very young, her Dad moved out of the house while she was playing hide and seek with him. Since then, she distrusts people and withdrew herself into her own world. Whenever she steps out of her home, she wears an iron helmet. Neighbors call her a princess in an iron helmet. But one day, Tamako discovers her mother falls in love with a guy she knows. Moreover, the bake shop temporarily closes its business due to the old man’s sudden illness. To makes the situation even more shocking, she finds her homebound cat gone from her house. All of a sudden, her secure and comfortable world begins to tumble down.
Tamako craves for a sweet bun and decided to step into a world she’s never been…..