Being used as a substitute for his sickly brother, Ling Mu suffered humiliation in the wealthy family's mansion. Everyone thinks he is a docile and fragile canary, but they don't know that he is also the anonymous financial trader "M" who stirs up troubles.
When Bai Yueguang truly returned, Ling Mu tore off his disguise and was recognized by a stronger wealthy family, becoming the sole heir to the rival giant crocodile. He returned as a king, vowing to make those who despised him in the past crawl at their feet.
On the road to revenge, the real "White Moonlight" Gu Qingxian, who looked similar to him and was once regarded as his enemy, reached out to him. When lies and truth intertwine, will they move from old enemies to redemption, or will they drag each other into a deeper abyss?