A story about the passengers of the inland waterway Heinävesi. Salli, the daughter of the captain, dreams of an acting career and joins a performance by a theater company traveling on a ship.
A man embezzles some money in order to pay his debts and the daughter of his boss, who is in love with his son, asks a rich former suitor of hers for help.
Murders, with victims dying from spines broken by brute strength, erupt in the city and the killers, when encountered, walk away unharmed by police bullets which strike them.
Lady, a golden cocker spaniel, meets up with a mongrel dog who calls himself the Tramp. He is obviously from the wrong side of town, but happenings at Lady's home make her decide to travel with him for a while.