Cut to the Chase

A mysterious doorway! (Sure, it's in a restaurant that serves poop, but that doesn't make it any less mysterious. Ok?) Behold! What lies beyond?! An evil centipede? An alternate universe? A few decent explanation? Veeeing! Ning! Ning! Hey! was that a chainsaw?! Let's see if you can read and run at the same time... Go! It's the bad guys episode 13!