Xia Li was an orphan adopted by the anthropologist Su Liangping. Su Liangping implemented completely different education methods for his biological son Su Ke and his adopted son Xia Li. Xia Li's initial gratitude and admiration for his adoptive father finally turned into hatred one day. He left the Su family and became a mercenary. When he came back, Su Liangping was dead and Su Ke was working in the hands of a man nicknamed "Old Man". He was obsessed with Su Ke's good fortune and helped Su Ke in everything, but he did not expect that Su Ke had plans to get married and have children, so he decided to let go. But when Su Ke's marriage breaks down and his life is in danger, will Xia Li continue to stay by his side?