Pharmaceutical companies are one of the big business in the US, especially now when we are on the brink of medical marijuana revolution.

This is one of the main subjects in the film Gringo directed Nash Edgerton.
Harold Soyinka (David Oyelowo) is the mild-mannered representative for the pharmaceutical company Promethium, which offers an experimental marijuana pill.

Richard Rusk (Joel Edgerton) and Elaine Markison (Charlize Theron) are the co-presidents of the company. Richard is a womanizer and pretentious guy, Elaine is the typical bimbo who loves to be in control of everything using her "female fatal" tricks. Richard and Elaine are lovers and this takes a big toll in the way Promethium is leaning in the market. Harold, Richard, and Elaine travel to Mexico to meet the people in charge of the production of the marijuana pills. There, Harold discovers the plan from the co-presidents of Promethium to get rid of him. So, he comes up with his on a plan to get some money out of this situation. He pretends to be kidnapped by Mexican gang members asking for 5 million dollars.

From there the film becomes a chain reaction of bad decisions and mixed up situations. The problem with Gringo is a film with so many traditional stereotypes and typical plots, director Nash Edgerton tried to bring criticism to the pharmaceutical industry with an action comedy, but the film ends up as a silly film with a waste of great actors and a confusing story.