A centennial magnetic storm is brewing. Billy plans on monitoring it from a scientific perspective. Kim, and her pal Laura, take a troop of Girl Scouts into the woods. Laura, despite her 'beauty', turns out to be quite smart, and flirts with Billy somewhat. Lord Zedd sends down Goldar & the Putties to disrupt Billy's expierment. Swiping his magnetic monitoring device, Zedd turns it into the evil Magnetbrain monster. He wrecks havoc on the polarity of the city, sending chaos all around with repelling particles abound.