Art Jeffries, a former FBI agent, trying to protect the nine-Simon from the ruthless federal agents. The boy has autism, but he somehow managed to open the new government code that can not be deciphered. Simon reads the code "Mercury" with the same ease as if children's books. These abilities boy threaten the existence of the latest developments, especially if the enemy will be able to learn about the extraordinary abilities of Simon and grab it. Program Manager Nick Kudrow orders to remove Simon, but he does not consider that this matter has already intervened Jeffries. Art and boy haunted by the heels, and they understand that now anyone can not be fully trusted.