
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 from Jung Won that Young Jun wasn't with her on the day Hae Sung died. The police report was recorded falsely and Hae Sung thinks it's strange. Meanwhile, Tae Hoon, who is the vice president of a department store, tells Hae Sung that Young In works in the department store. Hae Sung meets Young In, only to find out that she's been living a hard life.
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.