When the Chambers sisters receive an invitation from their jet-setting aunt to spend the entire month of December at the family's cabin in Asheville, North Carolina, they have one question—why? The retreat, tucked into the Blue Ridge Mountains, may be the site of many happy childhood holidays and summers, but it also holds sad memories. The sisters and their aunt have spent twenty-five years avoiding the cabin and renting it to strangers. Why would Aunt Elizabeth want her "dearest darling" nieces to put their busy lives in three different states on hold and spend a month in the mountains?

Samantha Parker is picking up the pieces of her life—and a pen to sign divorce papers—after she finds out her husband has been cheating on her and the other woman is expecting his child. While the idea of leaving town and starting over is appealing, Sam's only option is to head back to her childhood home of Cocoa Beach, Florida, to help her recently widowed mother run their family inn. Can she go home and start her whole life over at forty-three?

Georgia Banks knows she’s living on borrowed time. So, when doctors tell her she’s got one last summer to make all her dreams come true, she’s determined to make every day count. The one thing that’s never in doubt, is that she wants her best friend, Gabe, to be with her every step of the way. And so, Georgia draws up her not-a-bucket list with all the things she’s determined to tick off before she goes – number one of which is to spend one last summer by the sea.

She’s 43 years old…and starting over from scratch. How did this happen? She had it all together. A stable marriage of two decades. Two grown daughters. And now she and her husband, empty nesters, were moving to a beach house. Until he showed up late one night and tore their marriage apart. A secret life. A different woman. Another family. Left alone, she has to begin again. And then her estranged sister and mother get thrown into the mix. When she buys a house on a small South Carolina island, will she learn what life is really about?

The last thing Beck Foster wants to do is attend a party for her estranged aunt in the Florida Keys. One month earlier, Beck’s seemingly ideal existence imploded when her husband of 34 years announced he was leaving her. Now, so she has to sell her house, get a job, and somehow put her broken heart and life back together. She can’t do all that if she runs off to visit a woman she barely remembers. Or can she? Accompanied by her grown daughter who also longs for an escape, Beck heads to Coconut Key, where she’d lived the earliest years of her life.