Children's author Maurice Flower lives with his batty mother, trombone teacher wife Deborah and their twin children would-be musician Amy and frustrated inventor Donald and with Shun, their Japanese housekeeper, who provides erotic illustrations for Maurice. On the couple's anniversary - after Maurice has appeared to try and hang himself - they throw a party inviting acerbic plastic surgeon George and his daughter Abigail and builder Barry, who adores Deborah and fights George over her. Events are overshadowed when one of George's inventions blows up and Nana has an accident.
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