Jasper struggles to deal with the excessive attentions of his classmate Isabel, who just won't leave him alone. In the schoolyard, she badgers him and his friends Ori and Leon to play babies. In the classroom, she forces him to be her reading buddy. And, worst of all, after school, she 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 Isabel has a trampoline, where he gets a "flip-floppy feeling" that is better than anything else in the world. Can Jasper find a way to keep using her trampoline and get her to stop being in love with him?