This episode involves Dennis helping out a mareep herding family when two galactic grunts steal Kaylee's mareep herd it is up to him and his Prinplup to save them. Humans Kaylee Dennis Kaylee's Mother Galactic Grunt X2 Pokemon Prinplup[Dennis's] Azumarill[Dennis's] Mareep[Kaylee's also a Part of an herd] Mareep[Kaylee's Mother also a part of the herd Scyther[Male Galactic Grunt's] Golbat[Female Galactic Grunt's] Pinsir Ampharos Slugma Crobat Xatu Skorupi