An aspiring novelist, Riku, and a budding singer-songwriter, Minami, fall deeply in love during their university years. Their romance soon leads to marriage but as Riku’s literary success skyrockets, so does his arrogance, overlooking his wife who sacrificed her own dreams to support him. One fateful morning after quite a fight, Riku wakes up in an alternate reality where everything is reversed. He is now a lowly publishing assistant while she has risen to stardom as a singer who doesn’t even know his name. Desperate to return to his former life, he embarks on a journey to win back the love of his life in a world turned upside down, only to confront the reality of the woman he once took for granted.