The bartender is a young girl with half of her body replaced by steam-powered robotics. A boy of about ten talking to her, and when the Doctor introduces himself and Rose, the girl gives her name as Silver Sally and the boy's name as Jimm. Jimm and Sally tell them about the zeg. It is a zone of electromagnetic gravitation that interferes with anything containing an electronic circuit. It goes as far as the Outreaches, where a lot of ships get stuck. People still come because they hope to find Hamlek Glint's lost treasure. The planet itself is owned by Drel McCavity, who is a collector of Hamlek Glint artifacts. Jimm's uncle is the biggest collector though.