After 35 years in Chicago, Donal reluctantly returns to the Scottish Highlands to make amends with his estranged older brother, Sandy. Sandy needs Donal to take over the family's whisky distillery or he will be forced to sell and give up on the family's legacy. But their reunion forces the brothers to confront the past and the real reason Donal left Glenrothan.

The narrative unfolds in the 14th Century, when the European nations vie for supremacy within the Holy Roman Empire. The ambitious Austrian Empire, desiring more land, invades neighbouring Switzerland, a serene and pastoral nation. Protagonist William Tell, a formerly peaceful hunter, finds himself forced to take action as his family and homeland come under threat from the oppressive Austrian King and his ruthless warlords.