Fireman Elvis Cridlington breaks his leg dancing around the Fire Station and begins to wonder if he is really cut out to be a fireman. But when Mike Flood ends up dangling precariously from his roof and Norman gets his head stuck in railings, it is up to Elvis to save the day.

For the Pontypandy Flower and Vegetable show, Mike is entering a marrow that he has been growing on his compost heap. But he did not heed Sam's advice about turning over his compost regularly, so when he removes his marrow the air gets into the heap and starts a fire!