Cha Mu-hyeok was adopted by foreigners and taken to Australia. Then his adoptive family threw him out onto the street. His beloved girlfriend dumps him for a rich foreigner. He, like a dog, sleeps in the back alleys and earns his living by robbery and deceit. A tragic incident brings him back to Korea, where he discovers that his mother is rich and famous; she abandoned him not out of need or hunger, but merely out of whim. And she has another beloved and spoiled son—a popular singer in Korea. Mu-hyeok's heart is gnawed by resentment and hatred toward his mother and the world. But a chance encounter brings him together with Son Inchae, a naive, kind, and caring girl, the manager of his capricious younger brother-singer, hopelessly and unrequitedly in love with her own ward.