On a rainy night in the alley of Nancheng, the seventeen-year-old delinquent Song Ye and the twenty-year-old second master of the Shen family, Shen Yu, broke each other's disguises - one was a "wild dog" holding a switchblade to protect himself in the swamp. He was abandoned in childhood and raised money for his grandmother with lung cancer by collecting protection money. The medicine fee is full of thorns but hides the desire for warmth; one is a "lone wolf" wearing a playboy mask. After the death of his parents, he pretends to be crazy and acts foolishly in the family whirlpool. He uses wine and sex to cover up his true fear. Under the bad shell, there is a loneliness that no one knows.
A humiliating "deal" tied the two of them. Song Ye was forced to stay with Shen Yu to pay for his grandmother's medical expenses, while Shen Yu enjoyed the pleasure of taming the "little wild cat". They hate each other, but they get a glimpse of each other's weaknesses as they get along day and night: Song Ye sees Shen Yu gritting his teeth and persisting in the conference room to keep his parents' property, and Shen Yu sees Song Ye's vulnerability as he secretly wipes tears in front of his grandma's photo. Side by side in the company, waiting outside the hospital, and the silence shared in the villa late at night, the "deal" quietly deteriorated. The arrogant Song Ye began to covet Shen Yu's occasional tenderness, and the bad Shen Yu was also attracted by Song Ye's pure heart.
But they are both people who dare not love - Song Ye is inferior to his background and is afraid that this feeling is just Shen Yu's whim; Shen Yu is afraid of losing and is used to pushing away people who may cause harm with indifference. When the family plots against each other and Nancheng's old debts arise one after another, the love that the two finally sprouted is crushed by reality. Song Ye fell into a desperate situation to protect Shen Yu, and lived in unspeakable pain from then on; Shen Yu won the family fight, but lost forever the young man who would challenge him, leaving only endless regrets for the rest of his life.