I really don’t want my bosom friends Sanya and Pashka to have a boring, uneventful summer! So they decide to make... a real raft! And sail on it along the river that flows next to the holiday village. This turns out to be not an easy task. After all, the guys have to learn a lot: tie sea knots, cut logs, install a mast... And during the journey itself, they turn into real Robinsons who get themselves not only food, but also fire. And what adventures await Sanya and Pashka around every turn of the river!..