It may take a miracle--or a hurricane--to save this family vacation. Stepsisters Stephanie and Diana undergo another adventure when they embark on a Grand Cayman cruise with their extended family to celebrate their grandmother's 80th birthday. But the vacation gets complicated with the addition of an eccentric Granny and a video-taping manic cousin. Plus Stephanie's growing interest in boys makes Diana's Mood-o-Meter swing like a pendulum...