It's the first day of summer break, and Mel is excited because all her friends from last summer's International Marine Biology camp are coming back to Malibu, California, for a visit. Mel can't wait to embark on another adventure with her friends aboard the Melibu, her magic beach towel that can safely transport its passengers anywhere they want to go, even beneath the ocean's dazzling surface. Buckle up for a fantastic ride exploring the sea life in Mel's hometown, where Mel and her friends can learn all about caring for the world's oceans, and learn an important lesson about recycling.