Lake Bell And Katie Aselton Get Naked, Primal, And Powerful

Three friends go on a camping trip on a small, uninhabited island, but they let petty squabbles flare up and they bicker furiously. Then three unhinged soldiers attack them. Do they flee in fear? Yes, at first. But once they swim a freezing lake, strip their clothes off, and huddle together for warmth, they turn into warriors.