A strange old woman allows a teenage runaway and a young orphan to stay in an abandoned house that overlooks the sea. However, when a menacing entity threatens their new home, they must band together and face their fears to save it.
Sato is an employee conducting a survey in front of Sendai Station. Saki takes the survey and the two ultimately become a couple. 10 years later, Sato proposes to Saki on the occasion of their 10th anniversary.