Mack is attempting to tidy things up at his stall, but Molly has been distracted by a funny poetry book. Meanwhile, Moira brings two new arrivals to the Kids Club for the first time – her granddaughter Caitlin and Caitlin's best friend Euan. Everyone is very excited to meet them and they immediately set about building a cool spy den for all the children at the Kids Club. As Caitlin takes charge, people notice how like her Granny she is. However, Moira is offended that people think Caitlin is nosy and bossy like her! Can Molly the poet find a way to help the grown-ups make it up to Moira?

Mrs Juniper feels slighted when Moira raves about the fancy new cafe in town. Mrs Juniper decides to give the Wobbly Coffee Pot Cafe a makeover and ropes in Mack and Sandy to help. When Cafe Juniper opens its doors, Mrs J is delighted with the results, but the customers don't seem so keen. Bob feels underdressed in his allotment clothes, and James doesn't like the fancy coffee he is served. Bob takes his sandwiches to Moira's office instead, and James shows up to make a cup of his favourite, normal tea. Soon Moira's office is full, and Cafe Juniper is empty. Mack tries to tell Mrs Juniper that she's losing her customers, but she won't listen. When Mrs J nips into Moira's office, she quickly realises where everyone is and finds out that they all loved the Wobbly Coffee Pot Cafe just the way it was.

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.