Mia, Laney, Betts, and Ginger have reunited to celebrate Betts's appointment to the Supreme Court. But when Senate hearings uncover a deeply buried skeleton in the friends' collective closet, they retreat to a summer house on the Chesapeake Bay, where they find themselves reliving a much darker period in their past—one that stirs up secrets they've kept for, and from, one another, and could change their lives forever.