Four children (the Swallows) on holiday in the Lake District sail on their own to an island and start a war with rival children (the Amazons). In the meantime, a mysterious man on a houseboat accuses them of a crime they did not commit.
![](http://maritimefilmfestival.co.uk/wp-content/uploads/2019/12/sa_vintage.jpg)
Four children (the Swallows) on holiday in the Lake District sail on their own to an island and start a war with rival children (the Amazons). In the meantime, a mysterious man on a houseboat accuses them of a crime they did not commit.