Sam has organised a Fun Run in Pontypandy for all the local children. But with a chocolate cake 1st prize up for grabs it's not long until Naughty Norman Price is up to mischief to make sure he wins. When his tricks go wrong injuring James, and with a search party from the air underway, it's up to Norman to make sure they're found. Will Sam and Tom find them in time? And who will win first prize? Find out in Fun Run.

Episodes Comprise:

1. Fun Run
2. Trouble And Squeak
3. Carnival Of Junk
4. Birthday Surprise
5. Norman's Invisible Friend