Beauty fades. Marriages change. But best friends are forever.

Diana has the perfectly planned life: boy-girl twins at Princeton and Brown, a wonderful marriage, and her own successful crisis PR agency. But is her narrow definition of success hurting her family?

Stay-at-home mom Kristin is adrift. With her daughter off at college, she wonders if there is more to life than a marriage built on Netflix binges and take out. Is it too much to want passion?

Single-by-choice Steph has spent decades trying to make sense of the one life-altering night. What if...

As their lives implode, these life-long best friends must rely on each other to survive a world that increasingly pushes them aside.