Mystery Meat

Mystery Meat is the first episode of Danny Phantom.

Summary
After Sam changes the meat menu to an "Ultra-Recyclo Vegetarian" one, Paulina is akumatized into the evil Meatballena by Hawk Moth to get revenge. Now, it's up to Danny to save Sam from Meatballena's clutches and bring Paulina back.

Transcript
Mystery Meat/Transcript