Sammo and George Lam are partners in crime and they scam some triad big shot out of a load of money and decide to retire. Three years later they both receive letters from Stanley Fung, in which he informs them that he has proof of all their criminal activity and unless they do exactly what he says–he will turn it over to the cops. Fung is an ex-cop himself and is trying to get the goods on the same triad leader that Sammo and George scammed.
The Owl vs Bombo is a 1984 Hong Kong action comedy film directed, produced by and starring Sammo Hung with George Lam, Deanie Ip and Michelle Yeoh, that is about a former police inspector that blackmails two thieves into becoming teachers at a reform center.