F/ACE, a popular idol group, gains fame under the leadership of the charismatic Tamon Fukuhara. Utage Kinoshita, a devoted fan, works hard at a cleaning company to support her idol. When she fills in for a sick colleague and meets a client named Tamon, she is shocked to find out he is the real Tamon Fukuhara. Contrary to his public image, the gloomy and introverted Tamon struggles with self-esteem. Utage, determined to protect his secret, navigates the challenges of supporting him both professionally and personally, as she witnesses his dual personas.