S2·E20 Erasing Gadget

Dr. Claw has a MAD scientist build a time machine then travel back to 1957 to prevent Gadget's parents Jules and Annie from meeting. Back in the 21st century, Gadget begins to fade away and so does Penny and the Gadgetinis since she can't exist without her grandparents and if she's never born there's no one to build them. While the scientist delays Jules, he still manages to crash his bicycle into Annie's and everyone reappears. The Gadgetinis and Gadget travel back in time to find the scientist who gets Gadget locked up but Gadget breaks out of the police station accompanied by his cellmate Marilyn, who was destined to meet Gordon Claw in the holding cell and eventually become Dr. Claw's mother. So, now the scientist has to try and get them together while breaking up Jules and Annie's budding romance and the Gadgetinis have to stop him.