A group of biologist search for evidence of an unseen southamerican bear. There, they hear about the local legend of a bear-man known as the ucumar.

A friendly couple and some punks are traveling through a mysterious route without knowing that a hideous humanoid creature is lurking.

Córdoba, 1970s. It's established that the best place to build a dam is over a town called El Salto, which has a church, a school, houses, and...