Naked and Afraid Spain

Five pairs of complete strangers venture into the inhospitable Colombian jungle for 21 days, where they must survive under extreme conditions.

Tensions begin to rise between the pairs, and hunger, thirst and the dangers of the jungle start to take their toll.

The jungle has claimed its first victim and threatens to take more. Tensions have driven one pair to a "divorce."

After the storm, it's not calm that arrives ... it’s mosquitoes, and their invasion is so overwhelming that it could cost them the challenge.