Professor Balthazar's neighbor is Oscar the watchmaker. When the professor's pendulum clock is broken he brings it to Oscar's shop. Inside the clock they find Igor the dancing mouse whose highest dream is to see the Elizabeth tower and the Big Ben in London. Some time later when the professor visits London to lecture on to use fog for peaceful means, the Big Ben breaks down. When the professor and Oscar arrive to the watch tower they once again meet Igor the dancing mouse.
Professor Balthazars Pendeluhr ist kaputt. Er bringt sie zu seinem Nachbarn, Oskar dem Uhrmacher, in den Laden. Dort erleben sie eine Überraschung.
