After a cruise ship disaster, Evelyn is betrayed by her ex-husband Hank and pushed into the deep sea by her vicious mother-in-law. She survives and drifts to a deserted island. Hank's entire family blindly trusts his mistress Chad, and not only eat raw seafood that makes them sick and dehydrated, but also ignore warnings about wild beasts and savages—and they drive Evelyn away. Only Hank's elder brother Milo, clear-headed and upright, stands with Evelyn, and together they build a sturdy shelter. As Chad's true nature is exposed and he pushes others to the beasts to save himself, Hank's family reaps what they sow amid attacks from ferocious beasts and savages, and is completely wiped out. Evelyn and Milo, relying on wisdom and courage, are successfully rescued, ultimately becoming a couple and welcoming a new life.