29-year-old Tae Myeong-ha suddenly falls into a game adapted from a novel, and meets his favorite character from the novel, Cha Ru-yun, at the age of 19. In the dark period of his life, his first mission is to make Cha Ru-yun happy, otherwise he will die...☆Going to your world and bringing happiness is my mission! ☆Adapted from a Korean webtoon, recreating a beautiful and romantic atmosphere☆Starring Lee Tae-bin from "Upper Class War", Cha Joo-wan from "School 2021", and talent show idol Cha Woong-ki