Following on from the events at the end of Class - Charlie Smith knows he has done the wrong thing in using the cabinet of souls to wipe the Shadow Kin from the face of the universe. He knows he has to suffer punishment and activates a beacon which brings the TARDIS and the Doctor to him. The only problem is that it is the wrong Doctor. When the Fifth Doctor and his companions, Tegan and Nyssa arrive instead, Charlie and Matteusz have to keep the truth quiet. Because this Doctor has never heard of Charlie or Miss. Quill or even of the Shadow Kin. And then people start to die...