Four hostages are rescued from a group of religious extremists in Barcelona. They make a vow to always watch out for one another. But they never expected to find that the world they have returned to has been transformed--by water. And the water is rising. nFour hostages are rescued from a group of religious extremists in Barcelona. After five years of being held captive together, they make a vow to always watch out for one another. But they never expected this. The world they have returned to has been transformed-by water. And the water is rising.