When Rachel, Kirsty, Gracie and Khadijhah go to a summer water sports club, they are excited to go sailing. But Naughty Jack Frost and his mischievous goblins are determined to ruin all the fun and have stolen Helen the Sailing Fairy's magical life jacket! Now it's not safe for the sailors to go out on the water. Can the fairy helpers find the life jacket so everyone can have fun sailing?