Set in war-torn 800AD Scotland, The Gaelic King tells the story of warrior-king Alpin mac Eachdach. When his young brother is captured, Alpin must hunt the kidnappers though a dark forest that hides an ancient evil.

Aaron, a young misfit living in a remote Scottish fishing community, is the lone survivor of a strange fishing accident that claimed the lives of five men including his older brother. Spurred on by sea-going folklore and local superstition, the village blames Aaron for this tragedy, making him an outcast amongst his own people. Steadfastly refusing to believe that his brother has died, he sets out to recover him and the rest of men.