The seawater belonging to the National Intelligence Service's International Crime (Drug) Team is called 'Panfunction' in the house on behalf of a colleague who died during the operation, and the blankjack of the unidentified gambling, 'Blackjack', aims for 6 billion won drugs. You know that there is. Now there is only one way to catch him. Seawater decides to jump directly into dangerous gambling boards.
Mimi started to gamble, dreaming of turning her life around. One night, she loses her family in front of her eyes in an unknown attack from an unidentified assailant.
Four friends pledge to commit suicide together but while standing on the ledge, only one of them actually jumps. Her ghost begins to haunt the remaining friends until the pledge is fulfilled.