A team of archeologists venture into exploring caves in North America. Here is a colony of blood-thirsty creatures. The so-called Vesps are a deadly danger to humans. Because of the sharp senses, they hunt everything they move. In the ruthless struggle for survival, every sound is a death sentence, and Ally and his family are forced to take shelter in the woods and live in silence. In the midst of this life-threatening chaos, even people can become dangerous when it comes to the struggle for life and death.