John, Susan, Titi and Roger finally got their parents' permission to take the Swallow boat to the coveted desert island in the lake. It is not easy to survive independently in a completely strange place. First of all, you have to find a safe stop for the ship, make your own fire, cook, set up tents, and withstand the heavy rain. But all this made the crew of the Swallow very excited. However, the origin of the suspicious boathouse and the strange and fierce pirates in the lake is really mysterious and worrying. Just then, they were attacked by two female "pirates"-Nancy and Peggy! They are the owners of the Amazon. Immediately, a "battle for the island" began! Which one of them finally won the island? Is the strange and fierce pirate an enemy or a friend? Let's start the adventure with them!