As Steven discusses his wife's pregnancy with a friend who owns a store, a rude man interrupts them. Steven ambushes the man outside and murders him. Shortly afterward, his wife Annie is killed in a hit-and-run accident as they cross the street together. Steven is left with traumatic flashbacks whenever he attempts to cross a street. Three years later, Steven works as a contract killer. As he prepares to kill his next target, Frank Dubois, a man falls from the building on to the cab he is in, setting off another panic attack.