Powerful socialite Arlene sweeps back into the ballroom-dance scene in affluent Montecito, infuriating rivals and putting studio owner David in a tough spot. New dancer MaryAnne strikes sparks with her teacher Jamie, arousing his fiancee Bonnie’s jealousy. A dance floor flirtation goes public for Erika and Rumen. An A-list party turns into a public humiliation as Arlene unveils her hot new dance partner Jonathan. (Updated for fyi airings.