A careerist from Warsaw, who does not like dogs, has to go to Kraków for professional reasons, where she meets a charming widower, his son and their four-legged pet.
Summer of 1939. Zosia is a young Polish girl who is deeply in love with Ukrainian Petro. Their great love will be put to the test when her father decides to marry her to a wealthy widower Skiba. Right after wedding she is left alone because her husband is drafted to the Polish army for the war with Germany. Meanwhile, tensions grow due to Jews, Poles, and Ukrainians living side by side.
Piasts' reign is coming to end on Casimir the Great, who have no sons. Polish throne comes to Anjous. Thanks to the marriage of Saint Jadwiga of Poland with Lithuanian Grand Duke Jogaila, an alliance is made and a new dynasty - Jagiellons, who rule Poland for next two hundred years
