Danny Phantom - Season 3 Episode 8

As one of the weakest ghost in the Ghost Zone, the Box Ghost attacks with every "deadly box" he has in the human world, but is easily defeated by Danny. He then makes a plan: he will use "Pandora's Box", the most powerful box ever created, and will use the evil and deadly powers inside it to attack Amity Park. Now Danny must find the only one able to save the day: Pandora herself!