Lena's sister Effie (Lucy Hale) takes the pants with her to Greece without telling anyone. When the pants get wet, she hangs them out on a clothesline to dry, and they disappear. When Effie finally gets up the nerve to tell Lena, Lena flies to Greece to look for the pants. Carmen, Tibby, and Bridget use up some of Carmen's stepdad's frequent flier miles and follow her. They hang pictures of the lost pants all over the island, but get no response. Meanwhile, Carmen, Tibby, and Bridget have located Kostas, and they connive to lure Lena into running into him. Lena is polite but curt to him and wishes him a good life when he tells her that he's leaving tomorrow to attend graduate school in London. Later that day, the other three girls try to talk Lena into following her heart, but Lena breaks into tears and says that Kostas broke her heart and that she can't go through something like that again. That night, Lena can't sleep and keeps looking out the window at the full "sailor" moon. Suddenly she gets out of bed and, in her nightgown, runs down to the harbor where Kostas is sitting in his boat looking up at her window. They hug and kiss and agree to give it another chance. In the final scene, the four "sisters" sit on the rocks and watch the sun set, knowing that, even if they never see the pants again, the pants have brought the four of them back together and that may be the pants' final gift to them.