After the death of Casey’s childhood best friend, glimpses of random people deaths started appearing in her dreams, such occurrence pushed her into conducting research about the characters shown in her dreams, aiming to save them. Tough, she was faced by defeat with every attempt, which caused her to enter a state of isolation, cutting contact with everyone in her life. One night, She glimpse a tall brunette girl in a dream, reassuring casey that she's going to try her best to avoid her foreseen death. Casey wakes up drowning in cold sweat as she realizes there was something familiar within that girl. After few days, a new student enters Casey’s class, she immediately recognises her, as the girl from her dream.