Fight Back to School 2

Six hours before the school bell, undercover cop Chow Sing-Chi is already in deep trouble. Reassigned from his last chaotic mission, he must now infiltrate a prestigious academy as a student to protect a key witness. The chalk dust and teenage drama are a far cry from his usual gunfights, but the criminal underworld hasn't forgotten him. This 1992 Hong Kong action-comedy blends chaotic classroom antics with genuine crime thriller stakes, as a cop who skipped the books must outsmart both ruthless gangsters and pop quizzes.