Taichi and Ameri, who are childhood friends, enjoy a short trekking trip and hold hands for the first time. Then they exchanged kisses for the first time and confirmed their feelings for each other, and after the trip was over, they started dating. However, the mountain road, which was supposed to be easy, got lost because of the excitement. Although they were at a loss, they arrived at a mountain cottage. There, the owner, Kudo, and his friend, Kita, are in the middle of cleaning up the mountain villa, which has closed due to the lack of customers.
