It is Tracy's first day at the Dumping Ground and already she is late for work. She made a promise to the kids, but she breaks it and upsets Gus on his guided tour. Tracy then finds a letter from her real mum in the filing cabinets in the office that was hidden when Tracy was in the Dumping Ground and which Mike and Cam have been hiding for years. Liam returns to the Dumping Ground after being kicked out by his foster parents, and Lily is jealous when Carmen begins mothering Poppy and Rosie.