Just before proposing to his girlfriend Tsutsui Rin at a restaurant, Igarashi Raito finds himself doused with wine by a mysterious old man. He then warned him, “If you don’t call off the proposal, you’ll end up living a life of failure,” before introducing himself as Igurashi Raito from 30 years in the future. This time travel drama depicts how Raito’s previously stable life, built on avoiding risks, is turned upside down by the bold actions and values of his future self from the year 2054.