Caroline, like everyone else in Sackets Harbor, is waiting anxiously for the first supply boats of the year to arrive. Without supplies, the shipyards can't build boats to fight the British. When Caroline and her friends Rhonda and Seth go out fishing in Papa's skiff, they're excited to catch sight of a supply boat - until they realize that it's being chased by a British warship. Desperate to save the supply boat, Caroline comes up with a daring idea. Will her plan work? Or is it a dangerous and foolish risk? Caroline has no time to think - she can only plunge ahead.