Do Do Hae is a confident and outgoing young woman who is the daughter of the chairman of the Sindongyang Corporation. She works to help abused women. Ahn Min Bok is a veteran cop who lives for his daughter Yeong Hee. But Yeong Hee falls in love with Jung Eui Han who spends nights at the police station after curfew. Eui Han begins to work as a security guard at the Sindongyang building. He gets into an argument with Do Hae. She tries to get back at Eui Han but fails again and soon finds herself attracted to him. When she finds out that Eui Han and Yeong Hee are engaged, she bids them a happy marriage while hiding her tears