Finally, Doctor Starfinder has succeeded in capturing the negative magical energy of the Doctor-Foster effect with the help of an accumulator and preserving it in a kind of egg! Hobbes has done a great service in developing this device. But what nobody but Professor Shakeshaft suspects, is that Hobbes did not come up with the ideas himself. He took the notes of Guy, a fellow student of Shakeshaft's from the Middle Ages, and tore them up. Only the professor knows how dangerous it is to handle the energetic eggs, because his fellow student disappeared without a trace during an experiment with them 542 years ago! And Hobbes is now about to make the same mistake...