Didi Wood is nine months pregnant, doing some last-minute shopping before the baby is born. Stepping out of the air-conditioned Dallas mall into the cruel heat of the parking lot, she hears a voice behind her ... and the nightmare has begun.

Abducted by an increasingly unstable young man, Didi must endure an epic drive across the Texas plains, heading through the relentless heat toward a destination that only he knows.

Meanwhile, her anguished husband Rich is on the trail with an FBI agent who may or may not be as good as he says he is at rescuing hostages.