The Magic School Bus Meets It's Match

Things go sour when Ms. Frizzle decides to take the kids into space yet again. When a Madman with a bow tie comes to the rescue, the Schoolbus kids are left with several questions; who is 'The Doctor? How does he know Frizzle? What does a large blue box have to do with the origins of the Schoolbus? And most importantly, how can they return home after being stranded in 1955?