Nuns on the Run (1990)

From now on, it's every nun for himself!

Brian and Charlie work for a gangster. When the boss learns they want to "leave" he sets them up to be killed, after they help rob the local Triads of their drug dealing profits. Brian and Charlie decides to steal the money for themselves, but when their escape doesn't go to plan, they have to seek refuge in a Nuns' teacher training school.