"I made a deal with the devil." In which Ki Jihee was supposed to die at the age nineteen but made a deal with a grim reaper to keep living to be with her new boyfriend, Min Yoongi, as long as they're in love, she'd keep living. It is now four years later, and they're love seems to be dying down with all the fights they have... Will Yoongi notice that Jihee's time is up and help her? Or will he just let the one he once loved fade away?