When alien-hunter-come-TV-presenter Buck Douglas arrives in Pontypandy, the town gets a little over-excited at the prospect of featuring on Buckas Alien Quest show. With dodgy UFO sightings and mild peril on the increase, Fireman Sam sets off to find out whatas behind all this sudden alien activity aa. But will Sam ever discover whatas behind the unusual goings-on? Can UFOas really have come to Pontypandya. Sometimes things arenat as they seem.