Ms. Frizzle and her class are at a drive-in movie. 
An Army is trying to kill a giant praying mantis.
And that makes Phoebe angry! 
She thinks the army should just trap the big bug, not kill it.
So, the friz starts up the Magic School Bus and drives right into the movie.
And the class learns some tricks from the master trapper-the spider!
Come on a silver-screen adventure and learn how spiders trap their prey.