Pontypandy's Rescue Team is put to the test. There's plenty of trouble afoot when a dangerous fireworks display takes a fiery turn for the worst, and Sarah & James' runaway guinea pig causes a scare by nibbling on electrical cables. With Norman busy hatching a trick-or-treat plan to collect every sweet in the town for himself, what will happen next? Thankfully Fireman Sam is the hero next door - ready to help, and he's Brave to the Core!