The beautiful "Blue Bird" schooner is sailing along the Adriatic sea coast. The passengers of the schooner are children of different nationalities, winners of the competition "For Peace and Mutual Understanding". During this wonderful sea voyage children find out that there are smugglers on board the ship...
Hoping to receive compensation for the house belonging to her before the revolution, Madame Joubert comes to Odessa with her granddaughter Madeleine. While Madame is at war with enterprising Odessa citizens, her granddaughter meets Soviet peers and realizes the advantages of socialism.
Atanes Ghambaryan, resident of Armenian border village, after the captivity during the World War II, turns up abroad in Turkey and dreams of returning to his homeland. During one of night patrols, border guard Armen who is in love with Ghambaryan's daughter Seda, recognizes him on the other side of the river Araks.