On his final assignment, FBI special agent, Frank Castle plays his under cover role perfectly, but the operation spins out of control and a young man, Bobby Saint, is inadvertently killed. This places Castle on the wrong side of Tampa businessman Howard Saint. Behind the Saint's copious wealth are violent beginnings, underworld ties and a chilling capacity for brutality. Inflamed by the death of their son, Howard Saint and his lieutenants wreak havoc at the Castle family reunion. But Castle, to his everlasting torment, survives. Drawing upon all he has learned in 20 years, Castle sets in motion a brilliant plan to punish Howard Saint. As the Punisher, Castle has no superpowers to battle the evil he sees - only his fierce intelligence, his years of combat experience and, above all, his iron determination to avenge those wronged by society's villains.