Captain Egbert Walters and his friends plan to explore a beautiful Caribbean island. They dock their yacht in the marina-the captain, his assistant Lucy, and their two friends Winston and Horatio.

The island is a slice of paradise, so they set off on their adventure, filled with excitement. They enjoy amazing views of the landscape and indulge in enticing mango trees. But soon, something out of the ordinary occurs. The dolphins in the harbor start going wild.

The captain jokes that it must be mating season, but Lucy knows dolphins are highly intelligent creatures who spook under durress. As it turns out, the dolphins are right. A massive storm overtakes the small island, causing much destruction and flooding.

The four friends are separated and now search for each other amidst the debris, but the storm has revealed some island secrets.

Lives are turned upside down as widespread devastation and panic engulf the population. Egbert, Lucy, Winston, and Horatio must find a way to survive their dire condition.