The Gangs, the Oscars, and the Walking Dead

Director Huang and Producer Chiu are two friends, who would like to make a genre movie titled, Everything Is Possible for Gangsters. However, there is not enough money for them. Therefore, besides their regular jobs as filmmakers in the daytime, they join the local gang to make some extra petty cash at night. One day, their big boss accidently notices the script written by the director, and that script is deeply favoured by him. So, he decides to invest in the project on one condition - his girl needs to be in this movie as the heroine. This unexpected decision leads to a series of inexplicable out-of-control incidents while making this movie. How can the producer solve this dilemma and get this masterpiece made?