A high-teen mystery thriller about a close relationship between teenage girls in a harsher survival competition than entrance examinations.

A relentless marketing executive and a warm-hearted intern are always at odds with each other but everything takes a wild turn when their souls switch after an unexpected kiss.

Trapped in the deadly cursed “Mafia Game,” the students of Yoo-il High must play the game to survive, while unraveling the mysteries behind the curse.