In the Haicheng business district, Su Ran fiercely made enemies. He was framed at the cocktail party, and Lin Yu, who was retired from the army, came to rescue him. From then on, he was guarded by a loyal dog, who would never leave him even if he was tired of being ridiculed by Su Ran. On a rainy night, Lin Yu bravely fought against the enemy's thugs to protect Su Ran; on the way to revenge, Su Ran fell into a trap, and Lin Yu risked his life to save him. Su Ran had an epiphany between life and death, put aside his hatred and retired to the small town with Lin Yu.