While rescuing a boy, Joe discovers a packet of valuable jewels on him.

Joe is being tracked down by a bounty hunter.

Joe comes to a railroad station where he uses his Army training to help a guard.

Joe helps a fisherman get his nephew back in school.

Two bounty hunters are to trying to chase Joe.

Joe becomes a fire dog; two boys are setting off false alarms; when a real fire starts they learn the hard way about what they've done.

Joe runs into criminals.

With Joe hurt, a little girl nurses him back to health.

A little boy and his father make Joe a part of their dolphin act.

Joe helps a young Indian while he tries to prove his manhood and encounters a wild bear.

After being injured in a fall, Joe is helped by a mute boy.

Joe leads a blind girl, who's gotten lost in the forest, to safety while in return she saves him from harm.

Joe befriends an elderly antiques dealer.

While Joe is being chased by two hunters, Joe meets Josh McCoy.

While working as a handyman, Josh is accused of robbing the house.

Joe and Josh get caught up in a truck hijacking.

Joe and Josh are unaware that a pair of motorcyclists hid a sack of stolen diamonds in Josh's backpack.

Joe searches for an escaped prisoner from a crashed plane.

A dogcatcher tries to use Joe and other dogs he's captured to help him commit crimes.

Joe chases a fugitive car thief.

Josh breaks his leg.

Joe and Josh find work on a farm where the farmer obsesses over a horse.

Josh meets a female runaway.

Josh tries to end a 30-year feud.

Josh gets a job driving a vintage car that is later stolen by thieves who intend to strip it.