Sammeli is a young boy who likes adventure. Late summer is a special time of the year for Sammeli, the time when he goes fishing on the river with his good friend Mr Partanen. The warm summer evenings are coming to an end and Sammeli is making the most of them. The mosquitoes are making the most of them too though. While bothered by mosquitoes, Sammeli embarks on another adventure. With the help of his friends, he learns there can be two sides to a story.