Doris begins her series with a special mission from the Queen herself: find out who's been causing holes to appear on the moon's surface. With a quick call to Marlon and the borrowing of a space rocket, Doris is ready to investigate.
After some persuading, Doris agrees to let Marlon fly her to a tropical island for a holiday. While relaxing with the contents of her bottomless bag, Doris gets to meet the not-so-wild island inhabitants, including new friend Leo.
Doris's lazy nature inspires her to buy a mail order robot to help out around the house. But while the robot tries its best, will she come to regret her decision?
The innate laziness of Doris plummets to even further depths as Marlon wants her to help with the gardening, and she does everything possible to avoid it.
When a robotic cat from outer space arrives on Earth, Doris and Marlon try to befriend it. But will the Spacecat understand that they mean him no harm, and will he stop accidentally hurting them with his dangerous technology?
Arguably Doris's most surreal adventure sees her drifting through the galaxy before encountering a planet full of fruit and a giant who wants to eat her. It's all a dream - or is it?
There's a chance to see Marlon without his glasses, as he and Doris have been invited to a fancy dress party. Leo also wants to come along and gets involved in the fun.
Marlon wants Doris to go with him on a beach holiday, but she prefers to sunbathe in her back garden. An outbreak of typical British weather causes her to change her mind, but will a shark in the sea make her change it back again?
Doris and Marlon take a holiday in the mountains, where Doris is full of mischief, but Marlon only wants to be creative. In an attempt to stop Doris throwing snowballs, Marlon builds a snowcat - but gets more than he expected.
Doris wants to swop her television set for Marlon's new portable music system. When he agrees, it leads to a spate of swopping with their other friends, Coolcat and Leo. Will everyone be satisfied with what they finally end up with?
Doris is initially distracted by a butterfly while she's trying to sunbathe. However, at Marlon's urging, she becomes enchanted by the butterflies in her garden, and determined to have them fly on her paws the way they do for him.
Marlon wants to get in touch with nature by spending some time camping. However, Doris is ruining the ambience by only taking part in her mobile home. Will they find some compromise so they can enjoy the experience on equal terms?
Doris and Marlon are disturbing each other's peace and quiet by playing loud music throughout their homes. Once more they're called upon to find a compromise so they can continue being neighbours.
Spacecat returns, sending Doris and Marlon in a UFO to meet Charley, a cat who communicates only by beeping. With an alien world where phones produce water and music systems can be eaten, they experience one of their strangest adventures.
Marlon bluntly tells Doris that she's putting on too much weight. Yet despite his constant urging, it seems as if she simply won't exercise when he's around.
It's Doris's birthday, and Leo, Coolcat, Spacecat, Charley and even her robot cleaner all convince her that the presents they're carrying are not for her. When Marlon arrives, will he reveal the truth?