Shinpei has a dream of Ushio telling him to protect her sister, Mio.
He wakes up on the ferry to Hitogashima and accidentally falls into a woman's breasts.
Shinpei meets Mio and her friend Sou, who tells him that Ushio drowned saving a young girl named Shiori.
Shinpei meets Tetsu, the island's only police officer, who tells him that Shiori and her family have gone missing.
Shinpei learns that Ushio's shadow was seen at the scene of her death, and he realizes that he may have the ability to loop back in time to the beginning of the day.
