Wesley Gibson (James McAvoy) is a cube-dwelling hypochondriac; humiliated by his boss and cuckolded by his cheating girlfriend, Wes seems not able to achieve anything in life. Upon discovering that the father he never knew has been brutally murdered, however, the spineless, clock-punching pushover is recruited into a secret society of assassins known as The Fraternity. During his training, the man who was once an office-bound wimp develops lightning-fast reflexes and superhuman dexterity courtesy of his skilled mentor Fox (Angelina Jolie).

Wes is assigned the task of dealing out death to the mythological Fates who possess the ability to alter the lifelines of mortal men. he gradually begins to suspect that his wise tutors are not the crime-fighting enforcers they present themselves to be.Wes is about to find out that the only thing more difficult than ending the lives of others is summoning the courage to take control of his own.