King of the Jungle is a crime thriller movie. It is set in New York City. Seymour is a mentally challenged young man. He sees his mother gunned down in the course of her work as an activist. When he finds a gun in the home of a friend Seymour decides to take action and revenge. He searches out the killers of his mother in order to get revenge on them. Many mentally challenged people are very peaceful, kind and loving. This is the case with Seymour until his mother dies before his eyes. Now he has a gun and is seeking those who killed her.