Fun with the friendly fireman. A fire begins on Pontypandy Mountain. Meanwhile, Dilys has got all dolled up for a day out with Trevor, only to find that he's taking her bird watching. Their hot date proves to be hotter than expected as the bush-fire traps them inside their bird watching hide. The Twins alert Sam who radios Tom Thomas to let him know where the fire is. Tom drops a quenching load of dyed water from his helicopter, which douses the flames and hits the irresponsible firestarter too.