A mother searches for her missing son after a devastating calamity, only to realize that she has died and is now confined to a realm of restless spirits.

Masajiro Miyazawa owns and runs a pawn shop for generations. His first son is Kenji and his daughter is Toshi Miyazawa. Kenji is supposed to take over the pawn shop as the first son, but he refuses. Masajiro is soft on his son. Meanwhile, Toshi is smart and wise. She gives advice to her father and her older brother. One day, Toshi gets sick.

The summer of his freshman year, Hodaka runs away to bustling, ever-raining Tokyo and falls for Hina, a girl who seems able to manipulate the weather.

Days before graduation, an unassuming teacher takes his class hostage: he's determined to confront the truth about their classmate who died by suicide.