Rin is a student who dreams of getting into a prestigious university. To that end, she and her father attend an interview with the university’s director. The father and daughter don’t have a good relationship, a fact noted by the director, who gives them an amulet that will «allow them to step into each other’s shoes.»
After the interview, they head down the stairs, but Rin slips and falls, along with her father. As they both lose consciousness, the amulet glows and switches their bodies. Now Rin has her father’s body, and vice versa.
They must live each other’s lives: Rin takes over her father’s job, and her father must study for his university entrance exam in five days.