Mentari is a 15-year-old tomboy girl who is smart and kind, but because she lives on the streets without her parents, she grows up to be stubborn and has no manners. Mentari was forced to steal and become a pickpocket to support her living. One day, Mentari hid in a car while trying to escape from security, without realizing it, she was seen by Tyo and Rika. They then adopted Mentari. One day, Tyo and Rika were in financial trouble. Accidentally, Mentari meets Aldi, who turns out to be her grandfather. When will Mentari realize that Aldi is her grandfather? What will Mentari's life be like next?