The world seems to have returned to normalcy. The aliens who call themselves Souls have been saved from their epidemic. James Wendt is back to school. Most important, the prankster, Aurora, has given up pranks after the disastrous one she played on Wendt before the last adventure. That idyllic condition is about to be upset by another group of aliens who want revenge on the Souls for their attempted conquest of the galaxy. They will not let anything stand between them and their revenge - even the entire population of the Earth.Wendt's problem this time is that the Ministry of Magic think the witch who replaced him is a better fit for this job. That means that he has to go - from Hogwarts, from England, from life itself!