Tyler and Hadley fight to keep their campaign afloat as tensions between the Brandons and New Principal Pat Corker come to a head. Derek Grody begins to suspect he will be outed as "patient zero" of the Berenger crabs epidemic, providing a political opportunity for Chad and Debra. The Earth Day Fun Run falls into the wrong hands.

Blair McGunty's campaign gets off to an awkward start at the first Presidential debate. Chad and Debra make a shocking announcement. Computer Basics teacher Mr. Brooks inadvertently alters the course of the campaign. Hadler focuses on damage control while struggling to compete against Chadebra and the in-crowds' aggressive fundraising efforts.