A wild woman-themed villain named Beastwoman uses her multi-frequency Beast Whistle to have the animals at Big City Zoo break out of their cages and drive the people out of Big City. When Dynomutt falls victim to the Beast Whistle, it is up to his master the Blue Falcon to stop her.

B.F. manages to release himself and reprogram Dog Wonder so he won't obey Beastwoman's Beastwhistle. B.W., meanwhile, employs some bird to seed the clouds and have them rain on the seeded Big City, turning it into a jungle. The Daring Duo learn she plans to do this to the rest of the U.S.A. via rocket power, so Blue Falcon detains Beastwoman whilst Dynomutt goes up with the rocket which crashes into the lake and D.W. becomes a moss-covered mechanical mutt. Blue Falcon severs Beastwoman's powers by snipping her veins, and Big City is restored to normal. Blue Falcon attempts to shear Dynomutt's veins, but the latter decides to shake them off by dancing the Hula.

The Glob (a.k.a. Norbert Prindle) and his gang plan to steal the Baltese Falcon.

Madame Ape Face is using a device to help her steal the faces of beautiful starlets of Big City.

As Dynomutt escapes, Blue Falcon becomes Blue Blob. Dog Wonder races his blue buddy to The Falcon's Lair, where he sculpts him back to normal and spritzes him with The Falcon Instant Hardening Spray, and corner The Glob and his minions just as they nab the true Baltese Falcon. They capture Norbert Prindle in a huge goblet, and turn the crooks in and return the Falcon to the Crowne Art Gallery. Later, in the Falcon's Lair, D.W. tries to sculpt a ""Bluetese Falcon"", using B.F. for a model, but his creation shatters to pieces before he gets to profit big from it.

Shadowman mysteriously knows all of the plans of the Crime Commission and plans to commit a crime spree where one of them frames Mayor Gaunt.

Saved by The Falcon Fan Snapper, The Daring Duo rush to the aid of the most probable victims. When Fifi Foray wins a beauty contest, Dog Wonder disguises himself as Fifi, and an ensuing scuffle with Madame Ape Face results in D.W.'s face stolen. (Dynoape, Ape Wonder?! It'll never be the same!) Using The Dyno-Radar Hand Detector, the heroes find The Madame's lair and Dog Wonder's face is restored. They catch Ape Face in the act of pilfering Sarah Showerfaucet's face at her apartment. Blue Falcon captures The Madame just as she tosses Sarah's face out the window, but Dog Wonder manages to catch it before it shatters on the concrete below.

Mayor Gaunt swears his innocence so Blue Falcon and Dog Wonder inspect other members of the Crime Commission. At the District Attorney's home, The Shadowman straps The Daring Duo to a giant loaf of bread and sends them down a conveyor belt to their doom in a giant breadcutter. Dynomutt inflates the bread so it is too big to fit in the slicer and they escape to The Falcon's Lair, where Dynomutt restores both him and B.F. with his Dyno Paint Kit. Then they disguise themselves as The Panhandle Brothers unveiling a solid gold oil well used as a lure to trap The Shadowman, which is a success He is revealed by his own insidious Shadow-Box device to be Harold Twitch, the corrupt Crime Consultant himself. The Daring Duo return the stolen valuables, Mayor Gaunt is proven innocent, and Big City is once again safe