They think nothing can tear their bond apart, until a long-buried secret threatens to destroy everything.

Every year they have met up for a vacation, but their time away is much more than just a bit of fun. Over time, it has become a lifesaver, as each of them struggles with life’s triumphs and tragedies.

Sophie, Emily, Amy and Melissa have been best friends since they were girls. They have seen each other through everything—from Sophie’s private fear that she doesn’t actually want to be a mother despite having two kids, to Amy’s perfect-on-the-outside marriage that starts to reveal troubling warning signs, to Melissa’s spiraling alcoholism, to questions that are suddenly bubbling up around the paternity of Emily’s son. But could a lie that spans just as long as their friendship be the thing that tears them apart?