Four best friends finish their first year of college and dive into a summer of excitement.

Bridget journeys to Turkey on an archeological dig as Carmen plunges into the hectic, creative world of summer theater in Vermont while Lena discovers new love and old heartbreak at the Rhode Island School of Design.

In the Big Apple, Tibby takes a big step in her relationship with Brian and a magical pair of jeans keeps the girls together even when they're far apart.