Casey and the Cannonball pull into Midvale and gets an urgent message from Mr. Carter to see him urgently. He is introduced to Bill Maguire, a secret service agent for the President who will be passing through the town the next day. Casey is then offered the job off hauling the Presidents Special out to the start line for the new territories. A second agent Charles Upton is expected in town, but is bush whacked by men wanting to kill the President. Next day Casey and the fake agent take a run on the Cannonball to go over the route to be used by the President. At ...