Historical movie based on the "The Martens Brothers" (Romanian: Frații Jderi) novel. Ionut is the youngest son of Commissar Jder, a trusted man of Stephen the Great. He falls in love with Nasta, the daughter of a boyar, and competes for her affections with Alexăndrel, the ruler's own son. His longing for Nasta gives impetus to Ionuț, who, together with his brothers, puts his life at the service of Moldavia.