It is a perfect July morning, and Elle, a 50-year-old happily married mother of three, awakens at “The Paper Palace” - the family summer place she has visited every summer of her life. But this morning is different: Last night, Elle and her oldest friend, Jonas, crept out the back door into the darkness and had sex with each other for the first time, all while their spouses chatted away inside. Now, Elle will have to decide between the life she has made with her genuinely beloved husband and the life she always imagined she would have had with her childhood love.

Emily is having the time of her life - she’s in the mountains of Chile with her best friend, Kristen, on their annual reunion trip, and the women are feeling closer than ever. But on the last night of the trip, Emily enters their hotel suite to find blood and broken glass on the floor. Kristen says the cute backpacker she brought back to their room attacked her, and she had no choice but to kill him in self-defense.

Sophie Honeywell always wondered if Thomas Gordon was the one who got away. He was the perfect boyfriend, but on the day he was going to propose, she broke his heart. A year later, he married his travel agent, while Sophie has been mortifyingly single ever since. Now, Thomas is back in her life because Sophie has unexpectedly inherited his aunt Connie's house on Scribbly Gum Island - home of the famously unsolved Munro Baby mystery.

Alice, a novelist, meets Felix, who works in a warehouse, and asks him if he’d like to travel to Rome with her. In Dublin, her best friend Eileen is getting over a break-up and slips back into flirting with Simon, a man she has known since childhood. Alice, Felix, Eileen, and Simon are still young — but life is catching up with them. They desire each other, they delude each other, they worry about sex and friendship and the world they live in. Are they standing in the last lighted room before the darkness, bearing witness to something? 

Poppy and Alex. Alex and Poppy. They have nothing in common. She’s a wild child; he wears khakis. She has insatiable wanderlust; he prefers to stay home with a book. And somehow, ever since a fateful car share home from college many years ago, they are the very best of friends. For most of the year they live far apart - she’s in New York City, and he’s in their small hometown - but every summer, for a decade, they have taken one glorious week of vacation together.