The irascible manager of a lower-division Scottish football side must contend with problems off and on the field when his team's impatient American owner demands they win the Scottish Cup or else be relocated to Ireland, while also dealing with the forced arrival of a new star striker - who happens to be his estranged son-in-law, whom he blames for the breakdown of his relationship with his daughter.

In eleventh century Scotland, three witches foretell that Macbeth will become King, while Banquo will beget Kings. Macbeth accordingly has King Duncan slain, and is duly crowned in his place. But that's where his problems really begin...