Chun Jaeyoung and Chun Yusun visit the unusual drama company, which produces the customized play for each client. They ask the boss of troupe to make the play for their father, Chun Jongsik having a 70th birthday. The boss creates the customized play having interviews with their father and his acquaintances. In the play, Chun Jongsik experiences fiction and truth from the past so that he realizes what he has done and what he has been feeling sincerely, and eventually faces the trauma that has harassed himself.
An extremely wealthy elderly man dying from cancer undergoes a radical medical procedure that transfers his consciousness to the body of a healthy young man but everything may not be as good as it seems when he starts to uncover the mystery of the body's origins and the secret organization that will kill to keep its secrets.
Bound by a shared destiny, a bright, optimistic teen bursting with scientific curiosity and a former boy-genius inventor jaded by disillusionment embark on a danger-filled mission to unearth the secrets of an enigmatic place somewhere in time and space that exists in their collective memory as "Tomorrowland.