en Cuevana 3. The holiday of Pharmacist Himanen and Lieutenant Paavo Kehkonen turns into a nightmare when they pick up Station Chief Viirimäki, who is in a hurry to get to work. Their boat engine dies and runs into the rocks, leaving them stranded on an island with no clothes. Posing as a woman, Himanen gets to know the police chief's daughter Alli, but as a result of coincidences and misunderstandings, the two men end up in jail, each suspected in turn of being a fugitive Vikström.