Kat trains a police dog, Smokey, to be a search and rescue dog for her civics class. Her training ends up saving her own life when she gets trapped by the Machine Empire. Smokey aids the ankle-sprained & Morpher-less Kat in escaping from the Digster monster's lava-releasing rampage. Meanwhile, Bulk & Skull are put in charge of watching over Smokey, but the pooch manages to lose them at every turn. Also, the Rangers gain new Zeo Jet Cycles.