The hush of a beautiful summer's morning is suddenly shattered by a chorus welsh singing.
Albie's piano lesson with Olga is interrupted when he spots three hippos acting suspiciously in the garden.
Mary dares Albie, Reg and Spike to spend a night outside in the garden.
Albie will do anything to get out of piano lessons with Olga, but are there really elk in the garden?
The animals hatch a plan to get inside Albie's house to avoid the cold.
When Mr. Khan's valuable diamond is stolen, Albie investigates the theft.
It is Halloween. Cox sets an elaborate trap so that no one will pinch his prize pumpkins. Reg and Spike fail to persuade Albie to go trick or treating and leave him in bed. Noises from the woodshed disturb Albies' peace and upon investigation he finds the Moose behaving suspiciously.
Albie's garden is being cleared to make way for a rocket launch pad.
The gnus set sail in Mr. Kidhater-Cox's boat in the garden.
Mr. Kidhater-Cox opens his garden to the public, and suspects Albie of destroying his petunias.
The boys - as well as, elsewhere, Cox - are watching a documentary about life on other worlds. When the picture vanishes, Albie thinks it's the weather, while Reg and Spike think it's aliens. It is, in fact, elephants, stealing the aerials. Their next target is Cox's satellite dish.
When Albie draws a couple of moose on his blackboard one evening, Mary warns him that they'll give him nightmares. Positive that a couple of drawings can't present any danger, Albie goes to bed.
Albie finds a broken lamp, and is set to thinking about it.