Namiki Kouhei is fascinated by stars and dreams to discover one of his own. However he had to give up on this dream for financial troubles and now works at a security company. He gets assigned as a personal bodyguard of Han Yu Na, a Korean star, and at first they don't get along well. Han Yu Na is adored by everyone, but she likes her freedom and often escapes to go eat cheap Japanese food that she loves. But escaping is not the only reason she gives Namiki a hard time. Maybe her shabby keyholder is a key to understand her behavior better?