A 30-year-old animal researcher named Thomas travels to the jungles of Peru for his job to research a reported new species of lion. While facing problems with food, weather and other animals, Thomas works with local help to hunt for the lion. When he finds it, the lion is more vicious than expected, forcing Thomas to escape. After returning safely to a local town, Thomas' month-long trip proves a major success when the information and evidence he collected on the new lion species earns him widespread attention and a large paycheck.