Kim Hee-Woo is a prosecutor who is honest and upholds the principles of the law. He now works as an enthusiastic prosecutor. While he investigated possible felony, such as corruption and murder related to a politician named Cho Tae-Seob (Lee Kyoung-Young), he got killed by an unidentified men. But Kim Hee-Woo woke up and found himself alive again, returned to his high school days.
