Baoer and Belle are twins who once had a happy family. However, everything went wrong after their father witnessed a dirty deal. His father died tragically and his mother disappeared. In the orphanage, in order to make her sister live a better life, Baoer gave Belle for adoption to Zhang Kun and his wife, the pharmaceutical tycoons who came to do charity work. When he was 12 years old, Baoer left the orphanage to explore the world alone in search of his sister. He met Sha Mao, the city's underground emperor, and joined the gang from then on. He was secretly trained by Sha Mao and became the thumb of the evil hand.
After Belle was adopted by Zhang Kun and his wife, before she could recover from the shock of losing her loved ones, she discovered the hungry wolf-like eyes next to him. He was Zhang Wei, Zhang Kun's son. Zhang Wei has a perverse personality and thinks that Belle is the child bride his parents found for him and a punching bag. Poor Belle grew up in humiliation. After graduating from college, she established her own underwear company with her sisters in the same dormitory. Just when his career was on the right track, he discovered that his good sisters had become homosexual and developed a love for him, and there was an even more terrifying wolf in the house. The unaccompanied Belle met her brother Bao'er at this time. After the brother and sister recognized each other, they returned to the place where their childhood dreams were buried and opened a bottle that had been buried for fifteen years. The bottle contained his father's suicide note and a piece of film. The developed photo showed Sha Mao and Zhang Kun doing a drug deal. After discovering the truth, they embarked on a road of revenge for their parents' blood feud.