The vicious Alpha x the sick Omega Sheng Jin, who was the lone witness to a murder, until an injury to his head caused all his memories to fade away. His late mother's best friend decided to adopt him, and her son Zhu Xiuzhuo became Sheng Jin's foster brother, and they started living together from then on. As time passed by, the truth slowly revealed itself, and Zhu Xiuzhuo also discovered the other side of Sheng Jin... the vicious dog-like Alpha changed his nature for him.