Please answer the following question: Build a movie plot around this: ganster was responssible for what? for the death of Gagin's war buddy
A:
Easing into San Pablo on a Greyhound bus, Blackie Gagin (Robert Montgomery) wastes no time in securing a locker where he leaves a canceled check. He has come to confront gangster Frank Hugo (Fred Clark) who is responsible for the death of Gagin's war buddy and intends to extort the criminal for a sizable sum of money or he will send the check to the police. As it turns out an FBI agent in town, Bill Retz (Art Smith) has been tracking Hugo and intends to bring him to justice and when he discovers that Gagin has a telltale piece of evidence that can help he lets the man know he wants it. Gagin is planning his own kind of justice but needs a hotel room and none are available due to a Mexican holiday celebration that has all the places to stay booked. When young waif Pila (Wanda Hendrix) attaches herself to Gagin and introduces him to the local carousel owner Pancho (Thomas Gomez), a drinking friendship is formed and Gagin gets to sleep in a small shack owned by Pancho. Hugo's girlfriend Carla (Rita Conde) secretly meets Gagin to tell him he should extort as much as he can from Hugo and share with her, and Gagin discovers too late that she has her own agenda, and that to mete out his own form of justice he has to fight for his life.