While defending his realm, Alexander must navigate a treacherous political landscape. He discovers that powerful boyars (nobles) are plotting to betray Novgorod to boost their own trade interests.
The movie is set in 13th-century Novgorod, where a young Prince Alexander faces threats from multiple fronts: the Mongol Horde to the east and the Swedish and Teutonic forces to the west.
During his wedding feast, an attempt is made to poison him. Suspicion falls on his best friend, Ratmir, who is also his rival in a love triangle.