When Liv and Nora decide to take their husbands and children on a holiday cruise, everyone is thrilled.

The ship's comforts and possibilities seem infinite. But when they all go ashore in beautiful Central America, a series of minor mishaps lead the families further from the ship's safety. One minute the children are there, and the next they're gone.

What follows is a heart-racing story told from the perspectives of the adults and the children as the distraught parents - now turning on one another and blaming themselves - try to recover their children and their shattered lives.