It's a wonderful little period piece about Welles's famed Mercury Theater production of "Julius Caesar" on Broadway in 1937--lots of fun, and Christian Mckay looks and sounds so much like a young Orson Welles it's downright eerie.
But let's look at the captioning for this scene, in which the Zac Efron character has accidentally triggered the fire sprinklers during final rehearsals, and Welles is exhorting his troops to respond...
In fact, of course, the mercurial (Mercury Theater. Mercurial. Get it?) director is invoking martial law and suspending the hell out of his people's habeas corpi. You could say the mishap was an example of Murphy's Law, except that Welles himself almost wishes it upon the production, because...well, you have to see the movie to get that.