Several kids have been talking about their imaginary friend, Drill. What the parents don't know is that this friend is not as imaginary as they think. And when the mysterious games Drill convinces them to play turn dangerous, FBI child specialist Claire Bennigan is called in to investigate. Claire is still grieving over the death of her husband, Sean, who was killed when his military jet mysteriously crashed. And she's still getting used to being a single parent to her son, Henry, whose hearing was lost due to an illness. But what she doesn't know is that Henry has also been secretly speaking with Drill. Meanwhile, Defense Department operative Wes Lawrence's life, as well as the lives of his wife Lena and daughter Minx--who is also secretly in communication with Drill--has been turned upside-down ever since Lena discovered that her loving husband had been having an affair with Claire. But life as they knew it will never be the same when Wes travels halfway across the world, to the middle of the Sahara Desert, and unearths a strange, haunting geological phenomenon; unlike anything he has ever seen.