Miyu and Shuya are both in high school. They've been dating for two years. Miyu and Shuya had made a commitment to watch a movie together on the first day of each new month, no matter what. Shuya abruptly cancels Miyu and Shuya's movie date as they are on their way to the theater. Shuya appears to be hiding something and appears frightened. Miyu later travels to the location where she is meant to meet Shuya, but she watches Shuya being involved in a car accident. She panics, but when she awakens, she is in the morning of the accident. Miyu keeps waking up on the day Shuya was involved in an accident.