Fourteen-year-old Cosmo Hill longs to escape from the Clarissa FayneInstitute for Parentally Challenged Boys.

When a rare chance to get awaycomes, he grabs it, but the attempt goes fatally wrong.

He can feel his lifeforce ebbing away, sucked out of him by a strange blue Parasite ... until awisecracking gang of kids burst in, blast the creature and save him.They are the Supernaturalists, dedicated to ridding the world of theselife-sucking blue parasites.

When they realise that Cosmo also has theability to see these blue creatures, they enlist him as one of them too.