Join the Merry Five, Molly, Kirke and Weezy Rowe, and their twin comrades Paul and Pauline Bradstreet, as they prepare to go to Santa Luzia on vacation. Even before they leave, they run across trouble as baby Donald Rowe goes missing, and express dismay at the thought of a possible tagalong, Harry Hobbs. But soon those troubles are forgotten as new and more exciting adventures take place at the beach and at the Bradstreet's camp.(Summary by ShrimpPhish)