A group of adventurers decides to escape the routine and embark on an exciting journey to a remote cave in a rural area of Australia. Comprised of a couple of pairs and a friend, the group feels thrilled at the idea of exploring the depths of the dark and mysterious waters hidden within the cave. Equipped with snorkeling gear and some climbing equipment, they dive into the adventure with the promise of a summer filled with adrenaline.
However, what begins as a wonderful day of exploration soon turns into a nightmare. As they navigate through the dark underground waters, a sudden collapse traps them, cutting them off from the exit and plunging them into complete darkness. But that’s not all; what they don’t know is that a predator lurks in the shadows—a huge crocodile that has found its way into the cave system. As the situation grows increasingly desperate, the group must confront not only the claustrophobia of being trapped but also the fierce struggle for survival against a creature that has no intention of letting them escape.
With time running out and tension at its peak, the friends will have to support each other and face their deepest fears if they want to emerge alive from this abyss that promised to be nothing but fun. The fight for survival becomes an emotional battle that will make them question the trust and value of their friendship.