Five more adventures with Merlin, the black Labrador puppy whose special red collar magically transports him into various worlds of his own imagining. In 'Merlin, Secret Agent', the magical puppy goes on a mission to rescue Kizzie from the dreaded Doctor Whiskers. 'Merlin the Explorer' sees Merlin setting out on an expedition to the South Pole.

'Merlin and the Gold Medal' has Merlin enter the Winter Olympics. 'Merlin and the Ghost' finds Merlin keen to meet a real ghost. Finally, in 'Pavadoggi', Merlin enters the world of show business and feels the excitement of live performance.