Asako Kitamori (age 60) is widowed and currently single, living with her son and his wife in a tranquil land in a certain Kanto prefecture. Her grandson Takumi (22) is a university student and lives alone in Tokyo. Takumi decides to take advantage of his vacation to get a driver's license and returns to his parents' house after a long absence. However, the son and his wife (Takumi's parents) went on a trip, leaving Asako and Takumi alone. With a little chance, the forbidden relationship between her grandson and grandma begins...
