"Six-year-old Gracie Lynn is perpetually curious and bighearted. Convinced she knows how to save her beloved grandfather John from the 'worm' that is eating his brain - a metaphor her mother once used to explain John's dementia and sundown syndrome - Gracie helps him break out of his nursing home, and the two disappear together on a quest to chase the sun.
But what's an adventure for Gracie is a nightmare scenario for her estranged parents, LeeAnn and Dan. There's no way to predict where John might have taken their young daughter, or if he's capable of keeping her safe."
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