The juniors of Evergreen Academy travel to New York for a Model U.N. summit, where Jed is reunited with his ex-girlfriend, Lisa. When Lisa and Kate, Jed's current love interest, become awfully friendly with each other, Cary persuades Jed that a "ménage à trois" is on the cards. Meanwhile, Phil befriends some boys from Fort Union, and sparks fly between Cary and Stella.