An eight-part drama on the 1977 New York Yankees begins with Reggie Jackson (Daniel Sunjata) arriving at spring training after being signed by George Steinbrenner (Oliver Platt) against the wishes of manager Billy Martin (John Turturro). In New York, news breaks of the city's first serial killer in 40 years.
Reggie's tell-all interview upsets the Yankees clubhouse; “Son of Sam” sends letters to columnist Jimmy Breslin; the mayor forms the Omega task force.
Billy pulls Reggie from a game for not hustling; George wants to fire Billy, who is reduced to tears in front of Thurman Munson (Eric Jensen); “Son of Sam” strikes again.
Munson's plea to George backfires; a blackout hits New York City; the Yanks fall to third place and discuss batting Reggie clean-up; the anniversary of the first kill of “Son of Sam” approaches.
Facing immense pressure from George, Billy acquiesces and bats Reggie fourth in the lineup. The Yankees' fortunes improve, while the Omega task force closes in on “Son of Sam.”
The Yankees capture the AL East and head into the playoffs, where Reggie suddenly stops hitting, presenting Billy with a dilemma. Ed Koch wins a mayoral runoff against Mario Cuomo.
The ninth Dodgers-Yankees World Series begins in New York with an extra-innings thriller. Reggie publicly rips Billy before the series shifts to Los Angeles, where the Yanks hit their stride to return home one game away from a title.
Reggie earns the moniker “Mr. October” with his Game 6 performance as the Yanks celebrate their first World Series title under George's ownership. Rumors swirl that Reggie won't return in 1978 if Billy is still the manager.