Sue, a female cat, loses her memories in an accident. Motivated solely by reuniting with her separated family, she becomes an idol. Her journey includes television appearances and overcoming challenges to achieve stardom. These efforts lead her to successfully find her mother and sisters, Ran and Miki. After their reunion, Sue and her sisters form a musical unit. Ran possesses a tomboyish nature and expertise in piano, while Miki exhibits a girlish and mature demeanor. Sue remains the central protagonist of her narrative.