The river pirates are coming! Benny and the raccoon gang are celebrating a grand ship christening: Since their magical boat can sail upstream even without sails, they have named it "Flotte Flaute." They are already planning their next adventure on the Silver River. But just as they weigh anchor, the cheeky river pirates get in their way. They are envious and would love to have such a great ship for themselves... But what’s even worse is that the beaver sounds the alarm because a huge plastic island is floating in the water. Now the raccoon gang has to come up with a plan quickly, as the water animals are in danger. Everyone must pitch in - even the river pirates lend a hand!.