John Wick is a mob hit man who upon falling in love with a woman would quit. 5 years later, his wife dies and to make sure he's not alone she arranges for a dog to be brought to him after her death. One day some punks break into his home and they want Wick's car so they beat him up and they kill the dog. Wick sets out to find them and learns the leader is the son of his former employer, Viggo. Viggo then sends some to take care of Wick but he's too good. He then sets out to find Viggo's son. Viggo puts a price on Wick's head...