His parents' divorce is a heart-breaking experience for twelve-year-old Plamen. Left uncontrolled, he takes to the street and learns to steal. His father Halata works on a barge. One summer day the barge convoy sets out on a journey - with a stowaway. Nadya, who lives on board the barge with her parents, discovers Plamen. Despite her efforts to hide him, the Romanian border guards find Plamen. At first Halata enrages. Yet, a change gradually comes over him. Father and son mend their rift. The barges return to their home-port. The father bids his son goodbye. Then the mother steps forward. The boy remains between the two parents. Nadya calls him away. The grownups leave alone.