It all begins when Hailey Daily begin to relay the news that it was Marshall who melted Mr. Porter's stand and pinned Mayor Goodway down. Hailey deduced that it could be Marshall. Ryder and Rubble are rushing and begins to save Mayor Goodway. Hailey asked Ryder if Marshall is the culprit, Rubble strongly denies it and Ryder called Marshall but received Copycat at the end of the line. Ryder and Rubble deduced that the Copycat steals his vehicle. Ryder called Chase and tells her that Skye rescued Marshall and Precious from a tree and Marshall tells them that while he tried to save the kitten, someone zooms and steals his mighty vehicle. Ryder commands Marshall to go to him and he has a plan.
At the City Hall. Ryder commands Marshall and Rubble to charge up. Copycat underestimates them and declares that he is still in charge. The Copycat shoots Ryder at the back using a heat blast to overheat his jetpack forcing him to land and leaves Marshall and Rubble to stop the Copycat. Rubble and Marshall gone after him and Rubble used his energy ram to turn Copycat around. Copycat taunted them to bring it and they gone head to head until he disabled Rubble forcing him to use his ability: Wrecking Ball to use boulders to disable Copycat and the Copycat is flown away the vehicle and land at the bushes dizzy. Marshall then rushes and Hailey takes the footage and reports that the mighty vehicle is heading their way. Ryder tells Marshall to use his super jump to stop the vehicle. Marshall did just that and managed to stop the vehicle. While Copycat used his powers to revert to his alter-ego: Mr. Nibbles. Hailey apologizes to Marshall. Marshall accepts and laments that Copycat got away, Mr. Nibbles snickers suspiciously and he heads to the news van. Mayor Goodway thanks the Mighty Pups to help. And Mr. Porter offers some sundaes to them and everyone agreed for some sundaes on a very hot day.