Swallows and Amazons

The Walker children (John, Susan, Titty and Roger) are staying at a farm near a lake in the Lake District of England during the school holidays. They sail a borrowed dinghy named Swallow and meet the Blackett children (Nancy and Peggy), who sail a dinghy named Amazon. The Walkers camp on an island in the lake while the Blacketts live in their house nearby. When the children meet, they agree to join forces against a common enemy - the Blacketts' uncle James Turner.