In the midsummer of July, graduation and love breakup come to an end, becoming the boy's deepest regret. Zhang Fan bid farewell to four years of love and classmates, remembering the instructions of the criminal investigation squad leader, and cherishing the skills of the police academy and the mission of the family. When a drunken man encounters a murder on the street, he resolutely takes action and protects the peace with his youth and blood.
