A nature field researcher is investigating the strange extinction of small animals and insects in the area, which indicates that something is wrong. His suspicions are soon to be proven right when he meets May, who lives in a cabin in the forest nearby. May says that her house is infested by small creatures that she thinks are mice or rats. When the couple search the house further, they notice that they're not rodents or insects. They are fast evolving lizards that have the appetite for animals and humans, no matter what size their prey are...