There is only one supermarket on the remote island, Kominami, with a population of 1,500 people. Time passes by slowly and peacefully there, and the manager of the shop, Nagata, goes about his ordinary life as usual. But one day, during a stormy night, he finds a stranger in the backstore. The man's name is Momose, and he has been soaked to the skin in the storm. Nagata reluctantly allows him to stay the night as neither of them can go out in the storm. But when he wakes up, he finds Momose doing a hand job, saying that this is "the way to repay the favor"! Next morning, Nagata tries to kick him out and says goodbye, but Momose smiles and says, "Then I'll go home with you." Now, Nagata's peaceful rural life on the island is thrown into chaos