 The Guardians are left with no choice, when they must, reluctantly, recruit their former foes, Phobos, Cedric, and Miranda, to help them defeat Nerissa - who s, now, more powerful, than ever; Cornelia s family cat, "Napoleon", informs the Guardians about the ancient superstitions, revolving around Halloween - and the threat on his life; Irma - who is too busy, trying to "outgrow" the holiday - ends up taking her little brother, Chris, Cornelia s baby sister, Lillian, and Blunk, Trick-or-Treating, and makes an amazing discovery...