
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...
Jung Won accidentally watches the video that Hae Sung's been recording and finds out that Hae Sung has to return soon. She seeks for a word of advice from Ms. Do who has a similar experience. Ms. Do gives Jung Won a couple of days off for her to spend them fully with Hae Sung. Meanwhile, Ho Bang, Jung Won, and Hae Sung realize that Dong Seok's been keeping an eye on Jung Won's every move.
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.