Los Angeles police officers Brian Taylor (Jake Gyllenhaal) and Mike Zavala (Michael Peña) have everything to live for. They love their jobs, and have racked up a number of commendations in their still young careers. They’ve also formed an unbreakable bond with each other that transcends mere friendship. Things go horribly bad when a traffic stop turns up a cache of exotic weaponry and drug loot. The bust brings Taylor and Zavala even more glory, but also puts them on the radar of a vicious Mexican drug cartel. When the cartel places a green light on them, they find themselves on the front lines as never before.