Each show would open with Abercromby's Grandpa telling his story, in a green wooden bedroom surrounded by characters and props which later fill out the cast of Abercromby's dreams – a suit of armour in the corner (Arthur), a carved mermaid (Siren) and the tree outside (Great Oak).
Each story would finish with an alarm clock ringing, bringing Abercromby out of his dream and waking up to his Grandpa standing by his bed.
Abercromby then begins to tell his Grandpa an excited summary of the episode, volume fading down as the credits and music roll over the scene.
In one episode of the series, "Out of the Hat", Abercromby and his crew briefly find his Grandpa's watch, seen every week in the opening title sequence.
The series was being filmed at the Media Park in Maryhill, Glasgow but on 22 April a fire took hold of the studio, destroying all sets, props and equipment.