
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 gets saddened by the fact that he has to return when his time comes. However, he decides to make the most of his time and looks for the person who murdered him. Ho Bang helps Hae Sung by questioning Tae Hoon's father whose driver was accused as the murderer. Meanwhile, Min Joon asks his kitchen staff to come up with a new menu for the restaurant.
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.