<span><span>Twenty-two-year-old single mother Anna Jennings moves to her grandparents’ home for the summer with her four-year-old son, David. The sudden appearance of shadowy dinosaurs forces Anna to admit that she can see her son’s active imagination. Frightened for David’s safety, Anna struggles to learn the rules of this bizarre phenomenon, but what she uncovers along the way is completely unexpected: revelations about what her son’s imagination truly represents and dark secrets about her own childhood.</span></span>