Dr. Tracy finds himself involved in a scheme by two old ex-cons, who want to return to the safety and comfort of their jail cell, to get caught breaking into the safe in Hedley's office so they can be sent back to prison.
Local ranchers, angry that a cheetah Dr. Tracy is treating has killed some of their cattle, give him a week to get the animal to stop, or they'll take care of the cheetah themselves.
Hedley is at odds with the staff of the animal center when an unidentified creature is causing disturbances in the area. Hedley wants to kill it on sight but the rest want to capture it for study.
Paula, Jack, and Mike find their German shepherd Prince near death in the field from a poacher's spear. Because trying to move him could kill him, they are forced to try to remove the spear in the wild, without Dr. Tracy's help.