The Mechanic (2011)

Trailer

Arthur Bishop, working as a "mechanic" (mafia slang for hitman), sneaks into the lavish home of a Colombian Drug Cartel leader and drowns him in his own pool. Upon returning home to Louisiana, he meets with friend and mentor Harry McKenna, who pays Bishop for his work.

Bishop is given a new assignment: kill Harry. Bishop's employer confirms by phone that the contract is correct, whereupon he requests a face-to-face meeting. Dean tells him about a failed mission in South Africa, in which agency assassins were killed. Dean says that only himself and Harry knew the details of the mission, and that Harry had been paid for the contract details. Reluctantly Bishop kills Harry with the latter's own gun and makes it look like a carjacking. At his funeral, Bishop meets Harry's reckless son Steve. Bishop stops Steve from trying to kill a would-be carjacker in a misguided attempt at cathartic vengeance. Steve convinces Bishop to train him as a mechanic. Adopting a chihuahua, he instructs Steve to take the dog with him to a coffee shop each day at the same time. As Steve settles into a routine, Bishop escalates training, taking him to observe a contract killing.

The target is a mechanic for another agency named Burke, who frequents the same coffee shop. Burke's only weaknesses are that he is interested in young men and small dogs. Burke makes his move on Steve and invites him out for drinks. Bishop instructs Steve to slip a large dose of Rohypnol into Burke's drink to cause an overdose. Steve ignores the instructions and goes with Burke to his apartment. When Burke begins to undress, Steve attempts to strangle him with a belt as he had seen Bishop do on a former assignment. Burke fights back, using his size advantage and experience, but Steve manages to kill Burke after much effort and a lengthy fight. Dean expresses his disapproval of Bishop involving Steve, and that violated the rules of the contract arrangement, but Bishop says that Harry and his arrangement was for price only, and Harry left the details up to Bishop.

Bishop's next contract is to kill Christian Cult leader Andrew Vaughn. They plan to inject their victim with adrenaline to simulate a heart attack, for which the paramedics would administer a fatal dose of epinephrine. While Bishop and Steve are preparing for the hit, Vaughn's doctor arrives, and he sets Vaughn up with an IV of ketamine, which will inhibit the epinephrine's effects. The hit men decide to suffocate him instead, but are discovered after killing Vaughn and are forced into a shootout with the guards; they slip away and fly home separately.

At the airport, Bishop sees a supposed victim of the mission that Harry allegedly sold out. He confronts the other mechanic, who tells Bishop that he was paid by Dean to kill the other mechanics in South Africa and fake his death so that Dean could engineer the failed mission to cover up his own shady dealings; he also reveals that Dean framed Harry and that he tricked Bishop into killing his friend. The mechanic then attempts to kill Bishop and after a struggle between the two professionals, Bishop ends up killing him. Bishop is later ambushed by a hit squad: after killing them, he discovers that Dean was behind the hit. Bishop goes home to call Steve, only to find that Steve has been ambushed. Bishop directs Steve to a hidden gun, which Steve uses to kill his attackers. Steve gathers supplies for their new mission while he plots how to get to Dean. In the process he finds his father's gun and realizes that Bishop killed Harry.

Bishop and Steve kill Dean in an ambush: on the way back, Bishop notices Steve carrying Harry's gun. When they stop for gas, Steve floods the ground with fuel while pretending to fill the tank. He walks a safe distance and shoots the gas, blowing up the truck with Bishop still inside. Steve returns to the house and performs two actions that Bishop told him not to do: playing a record on the turntable, and taking the 1966 Jaguar E-Type. As he is driving away, Steve finds a note on the passenger seat: "Steve, if you're reading this, then you're dead!" Moments later, the car explodes, killing him; at the same time, Bishop's house also explodes. Back at the gas station, a security video reveals that Bishop had escaped from the truck, seconds before the explosion. Bishop gets into a spare truck and drives away.