It's been 6 years Jeonghan being adopted after a worst tragedy happened to him. He tried to live his life normally but his childhood photo with a boy always playing in his mind. The boy is the only key for him to know who Jeonghan truly are. Seungcheol leaves everything to achieve his dream of becoming an idol, it's took him 3 years to world recognized his group. With his success he finally can search the person he longing for.