Alex was just waking up as Jack, his house keeper, came into his room, to tell him that he had a message from MI6 and he that he was in danger.
Mr. Blunt said that Alex was in danger from a local gang and a group from the CIA needed a kid to get into a base while the guards thought that they were just a regular family.
Alex meant the CIA agents that he would be working with on the mission to a place called the Skeleton Keys.
After a failed attempt to storm the enemy base, Alex was captured and the CIA agents were killed by a trap set by General Alexei Sarov, plus the General wants to make Alex his adopted son.
Alex tried escape multiple times but was unsuccessful so he was sent to a place alone and was going on a plane to Russia with the General and the plane was carrying a nuke that Sarov planned to use on his own country, Russia.
After Alex told Sarov that he would rather be dead than his adopted son, so Sarov killed himself in front of Alex leaving Alex scared.