The villain Scarecrow's servants, the Scaredy Crows, are coating Gotham City with fear dust, and it is up to Ace the Bat-Hound to find a way to save Halloween for the city's children.
Ace the Bat-Hound and Krypto the Super-Dog smell something fishy. Penguin's Bad News Birds have stolen sardines from the Gotham City Marina. Together, the doggy duo must reel in the fowl felons and throw them in the can.