Park Jinyoung, a second year college student who appearantly lost his memories after a car accident, can never live his life the same as before. Little did he know why, after that incident, he had gotten himself a new ability, the ability to see spirits. Living with him is 6 lost souls who each have their own personality and power. The lost souls never leave him alone and keep coming after him to solve the mystery of their pasts. Will they ever be successful of finding their answers?