Fourteen years ago, Emma and Andrew Walker suffered a devastating loss when Mandy, their 6-year-old daughter, was kidnapped. Her unrecognizable body was found one week later. The case and resulting media coverage moved an entire nation to the point that everyone knew who the Walkers were. Everyone felt sympathetic...which indirectly propelled the Walker's businesses and careers. Years pass and the Walkers have both rebuilt their lives and prospered. As founders of The Mandy Walker Foundation, they've helped thousands of children around the world and have raised their new daughter, Meghan, in front of the world on a show called Second Chances. America is riveted by scenes of them coping with the loss of Mandy, but also finding new hope as Meghan grows. Everything comes crashing down when Meghan disappears soon after her 6th birthday—on the very day Mandy disappeared 14 years ago. Emma and Andrew now have just one week to save their little girl from the tragedy that befell her sister.