The Terror Twins go on the trail of a female criminal and her gang who have intercepted a shipment of a rare drug known as Zingiber. What they don't know is that the shipment actually contained some radium, encased in lead, with the drug.; The Terror Twins battle a fiendish villain who has developed a mysterious liquid spray that molds a person's mind to his will by paralyzing certain brain cells.; The Terror Twins chase after a gang of confidence men who have sold people in town worthless oil stocks, then become involved in a carnival in town.; Steve and Ploopie try to halt the successful robbery of rare jewels from a local jewelry store, but the thieves drop the rocks off in a sewer that leads to the municipal zoo.; The Professor and George start digging amongst the ruins of Collob Bonno, hoping to find a rare artifact. They uncover an ancient egg and are they surprised when in hatches!; Donn practices up his kissing on a poster of a famous star, but when he makes his move again, is he in for a surprise.