'Vendetta' is an action-packed crime-drama that follows two Irish-American brothers in Boston from childhood to adulthood as they rise to power on opposite sides of the law. The story begins in 1955 at a shipyard in South Boston. John Phelan, a burly dock worker with a thick Irish brogue, argues with two Mafioso over the strongarm tactics of the Italian-controlled union. The altercation turns physical and John, an adept pugilist, sends his enemies away limping. The following morning John kisses his wife and sons goodbye. As he exits the house, bullets rip through his chest as the two mobsters casually walk away. SEAN (Daniel Baldwin) and THOMAS (John Novak) watch as their father lies dying in the street. Eight years later, Sean and Thomas have taken completely different paths in life. Thomas studies with ambitions to make something of his life while Sean hangs out on street corners and dabbles in petty crime. Thomas eventually leaves for college and Sean, after a botched bank robbery attempt, winds up in prison. The early 1980s: Sean Phelan is fresh out of jail. Irish gang wars have bloodied the streets, and like a moth to a flame, Sean soon finds himself climbing the ranks of Boston's Irish mob. Meanwhile, Thomas is just as hungry for power and recognition on his side of the law. Now a District Attorney, Thomas is mentored by his father in law, Jack McGuire, a man with enough clout to help Thomas rise through the ranks of city politics. As the decade progresses, Thomas eventually becomes a candidate for Attorney General. His candidacy is marred, however, by Sean who is now head of the Irish underworld. The chasm between the two brothers grows steadily deeper. When faced with a personal and political crises, Thomas has nowhere else to turn and approaches Sean for help. State Police officers, frustrated by their dead-end investigation of Sean, are pressuring Thomas to provide incriminating information on his brother by threatening to expose Thomas's own illegal campaign fund raising. Sean faces his own crises when he finds out that the Italian Mafia has targeted both brothers for elimination. Their lives in the balance, Thomas and Sean must make decisions that will ultimately determine their fate and the fate of each other.