New York mafia capo Dwight "The General" Manfredi is released from prison after 25 years and exiled by his boss to set up shop in Tulsa, Oklahoma. Realizing that his mob family may not have his best interests in mind, Dwight slowly builds a crew.

With the city in peril following the seawall's collapse, Oswald "Oz" Cobb seeks to fill the power vacuum left by the death of Carmine Falcone and finally give his mother Francis the life he's always promised. But first, Oz must confront his enemies and his own demoralizing reputation as "the Penguin."