Cobrato is a herpetologist who experimented on himself with snake venom that turned him into a human/snake hybrid. 600 snakes have been stolen from the city zoo and the Turtles decide to investigate. During their investigation of a, the missing snakes capture three of the Turtles, but Leonardo is able to escape. Leonardo was unable to help his brothers because he admits he's afraid of snakes. Soon, it is revealed that the thefts were caused by Cobrato who wants to raise the Earth's temperature to make it more habitable to the snakes.