Thomson, clutching his lobster, is being escorted home from the pub by the friendly policeman, Murphy, when they encounter an escaped circus lion. Murphy bolts, but Thomson, mistaking the lion for a large dog, is unpeturbed. The lioness follows Thomson back to his boarding house and mayhem ensues.
Pumping station on a big mine pipeline appears to be run by corrupt staff who sell off gear, but in fact it works by gravity and was never necessary. The poor designer proves to be the company's general manager, famous for initiating the pipeline.