
S01E01 The Return
Hae Sung and Jung Won are ordinary high school seniors who are getting themselves ready for life after graduation. One day, Hae Sung wakes up to find everything surrounding him different. He was dead for...
Hae Sung finds out that Hae Chul got into a fight in the restaurant because someone accused Hae Sung of being a murderer. Mr. Ahn tells Hae Sung that he gets pain in his chest whenever he's near someone who's related to his death. Min Joon gets hit by a car while trying to help Jung Won.
Although born in the same year, two childhood friends end up being 13 years apart because they have aged surprisingly at different places (worlds) for some strange reason. Now Eom Hyeon Soo is a 31-year-old woman but Sung Hae Sung is still a 18-year-old boy. Cha Won Yooung is a chef also interested in Eom Hyeon Soo.