Monster revenge

The pupils of Nightmare Academy are in for their hardest year yet, as the Named monsters of the Nether prepare to break free. When Charlie, Violet and Theodore embark on a routine test in the Nether, Violet is abducted by Dangeroos and they end up in the middle of a breakout attempt by the remaining Named monsters. With the mysterious Guardian under threat, and Barakkas and Verminion still loose, only the misfits of the Nightmare Academy stand between humanity and total annihilation.