Bothrops barnetti, snake scarcer to find in Peru, its poison can kill within hours to any human being. The antidote was discontinued for over 30 years. Capturing this species is a challenge for herpetologists worldwide. Dozens of snakes in Peru are capable of endangering the life of a human being. We embark on the search for the snake. First target a Asarinka town founded 20 years ago, Sarpes. Many of the families of this town have lost a loved one or have been maimed because of snake bites. Hergona, local name as known to the Bothrops barnetti. Finally found the snake, and the first part of the catch goes smoothly. Lachesis muta is a very interesting species, its size is the largest in the world. A woman from the village seems to have been hiding in the brush. But what they find is a swarm of angry Ísulas biting the expedition. Just before leaving the Sarpes, discover a Boa Constrictor. A great copy. Change places and head outside Lima, in search of Bothrops pictus. A snake of smaller but highly toxic. The coral snake, a snake venom causes death by paralysis of the lungs. We see how the snake swallows its prey. Finally ... Will they find the Bothrops barnetti?