The true story of the rise and fall of the infamous crime boss Paul Castellano. Traces back to how, as a young man, he became involved with the mob; through the Byzantine background of the Mafia; and to the personal relationships he shared with his wife, children and mistress. Castellano's visionary plans to evolve the Cosa Nostra into a legitimate business, defying mob tradition, ultimately lead to his assassination by members of the crime family, marking the end of an era for the Mafia.