Set in the medieval period, the story follows the titular character, a man torn between his loyalty to the Teutonic Knights who raised him and his true heritage as a Lithuanian. As he rises to the position of Grand Master within the Order, he grapples with his internal conflict and ultimately chooses to betray the Knights to aid his native people. The narrative explores themes of identity, sacrifice, and the moral complexities of loyalty and betrayal, highlighting the personal and political struggles faced by the protagonist in his quest for justice and redemption.