Talk to the Copycat in in Saffron City to discover that she has lost her doll. Next visit Vermilion City's Pok&eacute;mon Fan Club and a person there will return the Pok&eacute; Doll. After returning it to the Copycat she will give you the <a href="http://pldh.net/dex/item/pass" class="linksred">Pass</a> that will allow traveling on the Magnet Train.