This is a story of a misbehaved high school son who will create an affectionate bond with his father who is reincarnated in the form of his friend after his death. Kang WonTak is a high school student who had a bad relationship with his father. Kang Wontak’s father, Kang YoungGue died the day before he was released from jail. At his father’s funeral, WonTak said “Are you happy that you are going alone?” and ran from the funeral. YoungGue meets an angel and told him that, “I want to be next to my son, even for a second.” The angel gave him a chance and changed (rebirth) YoungGue into WonTak’s class friend Ha DongHoon. However it was hard for the 50-year-old man to get used to living the life of an 18-year-old high school student while doing everything he can to get close to his estranged son.