Overview:Elaine runs an Open Day at the DG. Roxy aims to cause havoc with her sidekick Rio, but he proves an unwilling partner - even donning a clean shirt to impress potential new parents. Layla and Wolfie try to free Mike's free-range pig! The day ends in chaos but nothing prepares them for the shock return of Tracy Beaker to the Dumping Ground. Tracy has decided that she can't live with Cam anymore because Cam wants her new boyfriend Gary to move in with them.