There was a terrorist attack at the summer camp, during which the children were locked in the house and died from poison gas. Victor Scritcher, the son of a local police officer leading the investigation, became interested in this case because of his friend who died in the camp. Vic and his friends are trying to solve the crime faster than Scritcher Sr.

After Dumbledore's escape from school, a lot has changed. For example, Professor Umbridge took over the post of director, she recruited assistants with the name Inspection Team and expanded the powers of the Filch caretaker. But the Weasley twins were more excited and attracted by the greater risk of getting caught for hooliganism. One day Malfoy caught them, was going to take them to the headmaster, but the brothers found a way out here...