Sing-Sing (Stephen Chow) is an unruly but talented member of an elite special unit of the police force.

One day he takes his clowning around a step too far – and faces dismissal from the force.

However, a senior colleague steps in just in time, suggesting that instead of kicking him out, the unit’s leaders instead send him on an undercover mission to recover a stolen police pistol from a high school.

The catch is, Sing-Sing was never keen on school, and the mission sees him partnered up with a bumbling, older detective.

School proves to be just as tough for Sing-Sing the second time around – and things get even more complicated when he comes face-to-face with a ruthless gang of weapons dealers – and falls head-over-heels for the stunning Miss Ho (Sharla Cheung), the school counselor.

“Fight Back to School” is a 1991 Hong Kong movie that was directed by Gordon Chan.