Joe, an Army shepherd dog, was wrongly framed for attacking his master, Sergeant Corey. Joe managed to escape before being killed and a bounty was put on his head. Joe helped the people he found on his travels. Although Corey tried to clear Joe's reputation he never did it. During the second season, Corey Joe met Josh, a hiker, and continued on his trek while helping others. (The storyline followed "The Fugitive" tradition.) Joe is played by a German shepherd named Heinrich, who has been trained specifically to portray an Army attack dog unjustly accused of turning on his master, thus being labeled a killer.