A group of student activists travels to the Amazon to save the rain forest and soon discover that they are not alone, and that no good deed goes unpunished.

Carolina discovers that she can't have children the same day that her husband leaves her for her best friend. She attempts suicide and is hospitalized in a psychiatric clinic.

In Chile, a group of travelers who are in an underground nightclub when a massive earthquake hits quickly learn that reaching the surface is just the beginning of their nightmare.