The Kingdom of Singhasari was previously a small kingdom centred in east Java. It has now risen to be a great empire, led by an ambitious king named Kertanegara. His dream is to unite the whole archipelago of Nusantara. Kamandanu a humble blacksmith, who provides weapons for the king Kertanegara’s empire is cast out by his family. Disgraced and alone, Kamandanu embarks on a journey to find and train with his uncle.