Watch The Grim Adventures of Billy and Mandy Season 4 Episode 21 Online with Multi Subtitles - NetPrime

Watch Watch The Grim Adventures of Billy and Mandy Season 4 Episode 21 Online with Multi Subtitles - NetPrime on NetPrime - When Billy buys a new type of cereal, a phoenix emerges from the box and attaches itself to his head, annoying everyone. Since the phoenix cannot be removed because it comes back to life every time it is destroyed, Billy, Mandy, and Grim seek help by going to the factory where the cereal is produced, which is run by Eris, the goddess of chaos. Mandy tricks the phoenix into leaving Billy and attacking Eris instead. It is revealed that all the events were, in fact, an episode-within-an-episode.