Training Day (2001)

Jake Hoyt (Hawke) wants to become a LAPD narc agent, stop narcs from selling drugs on the streets. But that might be hard as he works with LAPD narc agent Alonzo Harris (Washington) for the next 24 hours. Alonzo is an LAPD veteran who has been working the narcs for over a decade, but his ways and techniques of becoming a narc agent are questionable, if not corrupt. As the 24 hours go by, Jake observes Alonzo's methods, and in the madness, Jake tries to solve all the twists and turns, trying to figure out who really is the enemy here.