Following a break-up from his long-suffering girlfriend Dee, Arthur puts his future on hold to move back home with his widowed mother, Maggie.

Maggie tries to inspire a visit from her grandchildren, while Robbie seeks a sperm donation from Arthur for her friends, a lesbian couple.

Maggie keeps going missing, leaving Arthur and Robbie to get creative in their attempts to keep track of her so Arthur can go on a date. Arthur meets Maya, whose family has taken over the dance studio that Maggie frequents.

Arthur battles with his identity when Maggie takes in a Ghanaian lodger at her house. Maggie and her new 'son' decide to run a Ghanaian food stall at the local markets. Arthur helps Dee pack for her move to Canberra.

Arthur and Maggie both engage in sexual misadventures with disastrous results. Maggie is horrified to learn that Leo's restaurant has been leased. Robbie tries to convince Maggie to sign over her Power of Attorney.