Yuma Kayamori, 24, runs a mobile supermarket in a lush mountainous area. One day after work, he shows up at his favorite store and has a terrible reunion with his best friend Rikuto, who suddenly disappeared when he was in elementary school. A chance request leads to the two of them being asked to do all sorts of things by the residents of the town. They are asked by a troubled high school girl to investigate her father's affair, discover an unidentified flying object, and more.