Arthur Bishop is a 'mechanic' - an elite assassin with a strict code requiring professional perfection and total detachment. One of an elite group of assassins, Bishop may be the best in the business - with a unique talent for cleanly eliminating targets. When Harry McKenna, his close friend and mentor, is murdered, Harry's son comes to him with vengeance in his heart and a desire to learn Bishop's trade, signaling the birth of a deadly partnership.

Arthur Bishop thought he had put his murderous past behind him when his most formidable foe kidnaps the love of his life. Now he is forced to travel the globe to complete three impossible assassinations, and do what he does best, make them look like accidents.