It's Christmas Eve, and Molly and her friends are writing their letters to Santa. They are super excited, but in their excitement, no one notices that Euan is very quiet. Euan eventually tells Molly that he hasn't posted his letter to Santa because he and his mum are homeless, so Santa won't know where he lives. Molly asks James what being homeless means, and he explains that Euan and his mum don't have a proper home at the moment, but that Santa will definitely still know where he lives. Meanwhile, Caitlin thinks that Moira has got her a real reindeer for Christmas and runs back to the Kids Club to tell her friends. When James asks Moira about this, she says that she's just getting a toy one. Moira scrambles to find a real reindeer to visit Caitlin, but she just can't find one. And on top of all this, Mrs Juniper is looking very tired. She tells Molly that she is hosting Christmas at home for all the stallholders - it's all a bit too much. Molly is determined that everyone should have the best Christmas ever. She convinces Euan to post his letter and asks Moira if they can all have Christmas together at the Big Hub in exchange for finding her a reindeer. Everyone works hard to get the Big Hub ready - they get food together so Mrs Juniper doesn't have to cook, Mack comes up with a solution to the reindeer problem, and Euan is happy that Santa did manage to find him after all. It really is the best Christmas ever.