The story of the invention of football and how it quickly rose to become the world's most popular game by crossing class divides.

England, 1879. With football still in its infancy and an amateur sport, upper-class teams, led by Old Etonians, have dominated the early years of the FA Cup. But a revolution is brewing: against the rules of the FA, James Walsh, the owner of working-class side Darwen FC and the associated mill, secretly pays talented Scottish players Fergus Suter and Jimmy Love to join the team ahead of the cup quarterfinals against Old Etonians, whose roster features several members of the FA Board, including team captain Arthur Kinnaird.