Boomer helps a old sea man look for a treasure that is supposedly on an island. So with Boomer leading the way they try to find it. But what they don't know is that there are a couple of guys on the island trying to thwart them.
After being chased by the East Side Aces and their doberman Attila, Joey forms another gang, the Dirty Half Dozen, with their dog Boomer. When Boomer is captured, the boys negotiate with the Aces.
Boomer goes into a mansion and sees that the owner's dog looks like him. When the dog decides to go, Boomer decides to take his place. The owner tells Boomer thinking he's her dog that she made arrangements for him to be with her when she goes. That means when she dies he will be put to sleep and buried with her. And she dies not long after that. And her lawyer is making the preparations. But two of her employees decide to find a way to stop it.
Boomer meets a young man who was a rising basketball player who is now bitter that he is confined to a wheelchair. Boomer then gets Meadowlark Lemon who is in town with his team the Bucketeers to help him.
Boomer meets a blind man whose guide dog has recently died. Boomer decides to be a substitute. The man wants to pursue his dream of being a cyclist and his new canine friend helps.
Two lowly regarded police officers are given a chance to prove themselves by being assigned to serve a warrant on a bookie. They can only succeed with Boomer's help.
