Three witches tell the Scottish general Macbeth that he will be King of Scotland. Encouraged by his wife, Macbeth kills the king, becomes the new king, and kills more people out of paranoia. Civil war erupts to overthrow Macbeth, resulting in more death.

Escaping post-war Europe, visionary architect László Tóth arrives in America to rebuild his life, his work, and his marriage to his wife Erzsébet after being forced apart during wartime by shifting borders and regimes. On his own in a strange new country, László settles in Pennsylvania, where the wealthy and prominent industrialist Harrison Lee Van Buren recognizes his talent for building. But power and legacy come at a heavy cost.

The individual journeys of the four members of the band, as they move through the music scene of the 1960s, playing small clubs throughout Britain and performing some of the biggest hits of the era, until their meeting in the summer of 1968 for a rehearsal that changes their lives forever.