Two alley cats hear of a strange spectral hound haunting the alleyway. The local cats want them to investigate, because Willow Alley is a great place to find scraps but no one is brave enough to go there at night.
Franklin and Flight-of-Eagle sneak into the alley at night. They find a blowing hound behind the dumpster. Flight-of-Eagle attacks it but her claws pass right through the spirit. They talk to the hound and he tells them that he cannot leave until he finds his ball. The ball rolled down into the sewer and he cannot go down there because spirits cannot cross running water.
Flight-of-Eagle tells Franklin to howl and try to convince a twofoot to come out into the alley to lift up the manhole. A twofoot does come out, but carries Franklin out of the alley and conveniently places him near the storm drain. The two cats scamper down into the sewer. They get wet, fight a rat, and find the ball. Flight-of-Eagle puts the ball in a plastic cup that was found in some trash so that she can carry in out.
The hound is grateful for the return of his ball, and he tells the duo that they can call on his help anytime as his spectral form flew away into the night.