The Third Summer of the Sisterhood is about four girls who have found magical pants that fit them each perfectly And it seems as if everytime they have a problem and they are wearing the pants it just seems to get better Now they are all off to college and about to embark on a wonderful yet difficult journey They learn how to start new lives without each other but they all still carry on one another in their heart as they go along Tibby is faced with a decision of dating her close friend Brian