The Pontypandy Pioneers are working towards their construction badges and what better way to do it than to build a treehouse under the supervision of Mike Flood! Norman is desperate to be the first one into the treehouse.

Mandy, Sarah, Helen, Hannah and Lizzy go to Newtown to see a boyband but Trevor's Bus goes off the road on the way there and they decide they shall go on foot but Mandy gets stuck.