Helena refuses to attend her high school reunion, not wishing to relive the past. But when visiting former classmates are murdered one by one, Barbara persuades her to get involved when it seems like flirting with her is what connects the victims. Meanwhile, Helena copes with her romantic attraction to Jack and continues hiding her true identity from Reese.

Having discovered that Helena is Huntress, Harley uses a machine to transfer hypnotic powers to herself and uses them on Helena to take control of the clock tower. Barbara, having neutralized the trance, works with Alfred, Dinah, Reese, and Helena to infiltrate the clock tower and battle Harley and her cohorts before they gain control of the entire city.