Mermaids, kidnappers, and mercenaries hijack a tropical vacation in this genre-bending sendup of the American honeymoon.On the grounds of a Caribbean island resort, newlyweds Deb and Chip—our opinionated, skeptical narrator and her cheerful jock husband who's friendly to a fault—meet a marine biologist who says she's sighted mermaids in a coral reef. As the resort's "parent company" swoops in to corner the market on mythological creatures, the couple joins forces with other a