Sisterhood Everlasting

Ten years after we last left them, the 4 "sisters" are back. Carmen, Bee, Tibby, and Lena have all traveled to their own corners of the world and taken up different careers and lifestyles, but in their hearts they all have that same deep connection they did when they were in highschool. Sometimes it can be more complicated though. It seems like they all have secrets and things they dislike about themselves and theur lives (doesn't everyone?) and that none of them know how to make the connection and start up their close friendship again. Who could've known that it would take several tragedies to bring them all together?