All Arthur wants is a nice, quiet Saturday at home, but Maggie believes a neighbour across the street stole her clock many years ago, so she returns to claim it, but is caught taking it. Arthur and Robert need to find a way to find out if the clock is genuinely hers or not. But there is something else up Robert's sleeve...
Secretly doing some babysitting during the day, Maggie gives away what shes doing when Arthur sees she's knitting a baby booty, but when he discovers the baby, he thinks she's kidnapped it from the shop. A visit from Robert and Liz prompts them to check on the baby and a letter that Maggie received in the mail for Robert leads Arthur, and eventually Liz, to think the baby is Robert's. Will Arthur find out what Maggie is up to?
All Arthur wants is to bring home a girlfriend for Sunday lunch, but convincing Maggie is the trouble. So he disguises his girlfriend as a distant cousin who is visiting the family, and this impresses Maggie, who just loves the family. Arthur gets the whole family together and lets Robert and Liz in on the secret, but they have a hard time keeping it from Maggie when an argument breaks out between Maggie and Liz.
It seems that Robert is about to turn over a new leaf when he takes Maggie out for a drive, but secretly is meeting up with another woman. After Maggie walks out of the car and Robert loses her, he and Liz go to search for her, but the mystery woman is discovered by Liz as they are searching for Maggie. Is this the end of Robert and Liz?
Maggie and Lorna are about to return home from England, and Robert has moved in with Arthur since Liz kicked him out. Once Robert finally leaves, and the sisters return home, Arthur is not surprised to find the sisters are not speaking, but it is over something that Lorna said about Arthur. This prompts a family meeting with everyone, and they turn against poor Arthur, who discovers what his family really thinks of him.
Arthur pleads with Maggie to start helping around the house cleaning when he goes to work, but even more so, he wants her to become independant due to the fact that he might be sick. After Robert tells Maggie Arthur is dying, Maggie starts to believe Arthur will die unless she helps him around the house.