The story unfolds around a young man called Wesley Gibson (James McAvoy) who is young, subject to panic attacks, suppressed by his boss, cheated on by his girlfriend (with his best friend) and generally miserable and depressed. His life is changed dramatically when Fox (Angelina Jolie) appears at this local chemist whilst he is collecting his weekly prescription with a wild tale of how a super assassin murdered his father on top of a tall building. The meeting is marred with a gun battle and his life is irreparably changed.
One of the best scenes is when he screams blue murder at his boss, belts his cheating friend with a keyboard and leaves to a 'better' more in control life.
