Early 20th century. A mysterious island in the heart of the ocean.
The bag full of treasures, explorers are about to leave, when the island begins to sink little by little.
Taken by panic, the adventurers try to escape a fatal fate. The luckiest will make the trip by boat, while the unfortunate will have to swim.
But no one will be safe from the sea monsters, sharks and whales that inhabit the surrounding seas!
Who will manage to get back to the mainland?