Plot: Planning to spend a cheerful vacation in Mexico with her boyfriend, instead, Lisa invites her adventurous younger sister, Kate, to have the time of their lives. Soon, the two sisters will meet a couple of friendly locals, who in the spur of the moment, convince the girls to join them on a shark-diving excursion to get a close-up look of the magnificent 25-foot great white sharks in the safety of an enclosed cage. Hesitantly, Lisa agrees; however, things will take an unexpected turn, when, due to sudden mechanical failure, the heavy cage plummets forty-seven meters down to the ocean's seabed, in shark-infested waters. Now, the only place safe is inside the confined space of the rickety cage; nevertheless, how long will it take the monstrous oceanic predators to break it?
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