The four Katerina’s kids dream about the sea. This is not a surprise after all their father served afloat all his life. Unfortunately, he died when they were children as a result of an accident. The woman is glad on one hand that the guys have the aim, but she is very distressed for them that they may have the destiny of their father. All boys after the achievement of the necessary age find the job at the fleet where they face their first difficulties and gain their first life victories.