Xiao Zhan is arranged married to a woman he don't love, they always fight for simple matter and sometimes Zhan had enough. One day his childhood friend Wang Yibo who is his first love come back. Wang Yibo is Zhan's childhood friend since he was 7 and Yibo 4. They were called twin angels when they were childrens because of their sweet, and kind nature. The both like each other but Yibo had to study abroad and Zhan was arranged married, but they fight for their love. They become secret lover, and even though Zhan is already married it doesn't matter for them all they want is each other. But one day, Zhan's parents and his wife tried to kill Yibo, Zhan saved him in time and hide him so everyone will thought that he really died. They started their revenge and killed everyone who tried to separate them, even they are his own parents and wife. They killed everyone for their love. Before they were called angels but now the angels turned into devils.