A group of students decides to spend their vacation traveling through Brazil, expecting exotic landscapes, beautiful animals, and interesting encounters. Little did they know that their adventure would take a dark turn. After their bus crashes near a remote island off the Brazilian coast, the young people find themselves stranded in the jungle. The impenetrable tropical forests hold their secrets, and the tourists become victims of the bloody experiments conducted by a secretive military group.

1. In the underwater scene, the actor’s panic was genuine as he couldn’t reach the oxygen tank.

2. Melissa George learned Portuguese specifically for her role in the movie.

3. A real doctor performed the surgery scene, not an actor.

4. Many Brazilian locals participated as extras in the film.

5. The screenplay was rewritten because it was initially too dark.

6. The entire movie was filmed in Brazil.

7. The director personally interviewed each actor in Rio before casting them.

8. Originally, the filming was planned to take place in Guatemala.

9. The movie was not well-received by Brazilians as it portrayed the country in an unfavorable light.

10. American actor Josh Duhamel apologized to the Brazilian government and people, stating that the filmmakers had no intention of discouraging tourists from visiting Brazil.

11. The bus accident scene was captured in a single take.

12. In the original version of the script, Melissa George’s character died.