Four friends (Carmen, Tibby, Lena, and Bridget) are facing their first ever summer apart from each other. Before they leave each other, they discover magical pants that miraculously fit all of them. They decide that the Pants should circulate among them throughout the summer. Bridget is off to soccer camp in Baja, Lena's off to Greece to visit her grandparents, Carmen's going to South Carolina to visit her dad, and Tibby is staying in Bethesda working at Wallman's. At soccer camp, Bridget falls in love with a soccer coach, Eric. She leaps into him head first despite his hesitation. Does Eric want the same thing as Bee, and if so, will he break her heart or follow her lead? Lena goes to Greece to see her grandparents and falls in love with a Greek boy named Kostos. Does Lena listen to her heart or her grandparents who are trying to break them apart? Carmen is going to see her dad, but to her surprise, he has a new family with a soon-to-be wife and two older kids. Will Carmen let this destroy her and her beliefs about her father, or will she be strong enough to put this behind her and embrace her extended family? Tibby is working at Wallman's and meets a kid named Bailey who happens to have leukemia. They become friends and Bailey teaches Tibby how to live her life to the fullest. Is there a happy ending to this tale, or is it a bleak one?