21 year old Jang AnChul has been on fast-track to success with his MMA career blossoming and setting up a phone store on side. Kim JinWoo, his fellow classmate that Anchul had bullied 3 years ago in high school and had ruined his life, places a curse on him upon death to make Jang AnChul turn into Kim JinWoo 3 years ago as a revenge. Now placed into bullied classmate’s body 3 years ago, Jang AnChul, in order to undo the curse, is tasked with stopping 4 “Life Completely Ruined” incidents as well as rehabilitating his past self. How will he navigate his way through his past self and his cronies torments?