Amaretto, a human girl who had lost her family and was on the verge of breathing her last alone in the slums, is rescued from her plight by a suspicious man in a black suit. The man, who introduces himself as Ginjo, claims that Amaretto has the talent to be an "Idol," but... Alongside Redheart the Ogre and Karimo the Fairy, she begins her journey as an idol. What does the future hold for her?! The story of a rising star in another world begins!!