Can friendship last forever? That is what The Skeleton Sisters are about to find out. Four young girls, each from very different households come together under a big old oak tree on a warm day in 1963 and pinky promise to be friends forever. Those bond hold until after high school graduation. 30 years later the four childhood friends have lived very different lives. Yet fate brings them together again, and that’s when the skeletons from the past really start to fall out of their closets. Can the friendship that was formed under the big old oak tree all these years ago, withstand the storm?