Michael has quickly established himself as the Dumping Ground's most unpopular kid – bullying the little ones, snitching on the older ones and constantly sucking up to the staff. Tracy realises that they could get rid of Michael for good if they could find someone to foster him. When Tracy stumbles across The Bygraves (ironically funeral directors), she reckons they might just be desperate enough to even consider Michael.

Jackie decides that it's finally time to rescue Grandpa, and enlists the help of her new pal Tracy. The girls sneak out of the Dumping Ground, and successfully get Grandpa back to his old house. Meanwhile, Louise is over to visit and Michael's fallen hard for her.

Michael and Crash come to blows when Elaine announces that a new kid Wilson is arriving, and one of them will have to share with him. Meanwhile, Tracy reckons it's about time Louise got her own back on her prankster boyfriend, Adam. All goes to plan until Tracy realises that she's got the wrong guy! Elaine is horrified to discover Wilson emerging from the cellar, covered in flour and rotten eggs. To Tracy's surprise, Wilson lies, saying he coated himself in them on purpose. Tracy appreciates Wilson's gesture, but will not admit to liking Wilson.

Jackie is caught off guard when she gets a letter from her Grandpa telling her that they're both entered in a charity race tomorrow. Tracy gets busy signing up sponsors, whilst Crash helps Jackie to train for the big day. Meanwhile, Cam comes round to see Tracy in a desperate attempt to make amends. But Tracy is sticking to her guns and Cam finds herself out in the cold.

There's a BBQ party to celebrate Justine leaving. Jackie goes to collect Grandpa to join the party, and is devastated to discover that he is in a wheelchair. Marco dresses up as a magician for the party but can't seem to do anything magic, until he pinches Duke's flip-flops while he is asleep and sends them up high into the sky tied to helium balloons with Duke waking up in time to see what is happening and then tries to catch them back down (but fails to do so) while everyone else is looking on with laughter. Jackie is determined that her Grandpa will still be the fastest Grandpa in the land and soon gets him wheeling at top speed. As Justine heads off to begin her new life, Tracy has to face the fact that she's the last kid from the old Dumping Ground set to be left behind.

Jackie's grandfather dies and she is having doubts about her future without him.