During a potion lesson to make the elixir of life, Mildred accidentally drops a cyberpup, lent to her by Ruby, into her cauldron. The potion froths and gurgles and overflows the sides of the cauldron. A creaking and groaning sound fills the classroom. The desk and floorboards are coming to life - as trees! The potion laboratory is wrecked. The cyberpup has also come to life - not harmless anymore, but spiky and ravenous and requiring endless attention. Miss Cackle seizes the opportunity for a complete modernization of the laboratory and decides to invite the Chair of the School Governors (who happens to be Mr. Hallow, Ethel's father) to inspect the damage and hopefully pay to re-equip the laboratory. Mr. Hallow arrives practically bursting with gadgets. He's keen to build the potion lab of the future: All Hallows Information Technology - The Software for Sorcery. Computers are installed and initially the girls are very excited - so are some of the staff, though not Miss Hardbroom. ...