Following Christmas break, the girls are back together, but everything seems different with the addition of Alicia's cousin from Spain who is spending the semester at Octavian Country Day School.
When a fire hits the home of Nancy's neighbors, Nancy investigates whether Paula, a Dutch foreign exchange student staying with them, is somehow connected.
Maria Meyers travels to Ireland after learning her daughter, Pearl, has chained herself to the U.S. Embassy and not eaten for six weeks, leading Maria to question her daughter's upbringing and the circumstances that have brought her to this point.
Seventeen-year-old Kelly gets into an exclusive summer program in Italy with a little help from a friend, but she almost ruins everything when she becomes involved with a bad-news guy, and must work hard to prove herself after being given the gift of a second chance.
When Ingvild arrives in New York City from Norway as an exchange student, she shares a room with fifteen-year-old Jennifer who becomes jealous of Ingvild's beauty and popularity at school.
Katla's hopes of dodging unfinished business during her senior year are dashed by the arrival of two "Icelandic exchange students," Marik and Jinky, who have come to collect Katla's frail baby sister and take her to the water queen.
Kelsi falls for Jean-Claude, the new foreign exchange student at East High, and must find a way to overcome her shyness and find a way to outwit Sharpay if she wants to win his attention.