For Chris Barnes and his best friend, Luke Lin-ford, summer has been anything but ordinary. After a botched attempt to help their local sheriff's department stop a criminal named Dr. Bertram Watson, the boys fear that the escaped Dr. Watson will be looking for revenge. Their suspicions are confirmed when two men arrive, claiming to be detectives who have more questions for Chris and Luke about their knowledge of Dr. Watson and his late wife-and then take them into protective custody while the investigation continues.
But after Chris, Luke, and their protective detail are attacked at their safe house, the pair of teens realizes that they'll have to take matters into their own hands if they want to capture Dr. Watson and live to tell the tale. On their own, it isn't long before Dr. Watson and his thugs catch up with them and chase the boys into an old graveyard. It's there that Chris and Luke receive help from an unexpected source and learn of a legendary crystal skull that, if found, can give anyone power to change the future.
When the boys learn that Luke is the key to finding the real skull, the two begin a dangerous adventure to find it before Dr. Watson silences them-permanently.