Following the death of his father, Alexander Mortensen moves into a small house with his family. There he dreams of doing great things, but life seems to get in the way until he stumbles across a clue leading to a stolen heirloom. With the help of his Uncle Mike, a retired cryptanalyst, Alexander and his brother begin to unlock clues which will reveal the location of a missing necklace. During the investigation, Alexander discovers that he is in a race with the thief who stole the necklace and that he must find the heirloom before the thief hurts his family.