Allison and friends, happily reunited, start their trip on the luxury train.  On first night, Allison meets Major Stork of the Sou Be Il army.  But come next morning, the chief conductor is found murdered.  Allison happens to see the conductor being attacked, and chases after the culprit, a man in a mask, but loses him.  The murderer must be somewhere on the train!  With assistance from Major Stork, Allison, Will and Benedict decide to hunt him down.   …