When Dawn and Claudia are allowed to sail in Long Island Sound without their sailing instructor, the baby-sitters and their young charges set out for Greenpoint Island and a day-long picnic, never expecting to be shipwrecked
Dawn and Claudia have been taking sailing lessons and can finally sail without any instructors. Now the girls and three kids they sit for plan to sail to Greenpoint Island for a picnic. But when a storm forces them way off course, they have an adventure they'll never forget.