Jasper is struggling to deal with the excessive attentions of his classmate Isabel, who just won't leave him alone. She even invites him over for a playdate! When Jasper complains to his parents that he's too sick to go to her house, his dad says he must have a case of "girl-itis." However, once he arrives, Jasper is thrilled to discover that Isabel has a trampoline that is just awesome fun to use. Can Jasper find some way to keep using her trampoline and yet get her to stop being in love with him?