The unconventional dark comedy ends by breaking with traditional narrative form, stepping away from the present to remember Shun's arrival at a happier time and giving the characters the freedom to decide their own fate.
Maurice makes a final bid to tell his family the truth, Deborah reconsiders their marriage and Amy makes a devastating discovery. Shun comes up with a plan to save the family - if only someone will listen to him.
The family is fractured as Deborah considers her future and Maurice and the twins struggle without her. Barry gives Maurice a shock while Deborah discovers something that calls everything into question.
As the dust settles from recent events the family find themselves back together at the house. Deborah and Maurice slip back into their paternal roles, for the good of the children. Donald realises that his sister may also be mentally ill.
A visit from Deborah's sister Viv stirs up the family, especially Deborah's suspicions that Maurice might be gay. Meanwhile Amy has a secret that she wants to tell her father, but will he return her honesty?
Maurice has been dropped by the Carols and Deborah is regretting her night with Barry so a dinner invitation from Barbara could not come at a worse time. Donald is upset as Amy and Abigail grow closer.
Maurice wants to open up to his family, but under the stress of the gathering at the hospital, Deborah steers him towards a new revelation. Meanwhile, a member of the family departs but remains.
Hylda confronts Deborah about Amy's increasingly odd behaviour. A drunken Maurice throws a wild party with the Pink Cuttlefish Orchestra. Amy discovers the truth about her grandfather and the origins of the Baumgaertner book.
Consumed by the fate of her grandfather and the intoxicating world of Baumgaertner, Amy seems to exist in a world of her own. Maurice and Deborah's relationship deteriorates and Shun is caught between the warring couple.
Maurice is on medication and seems in a better place, Deborah's "misery memoir" about him is about to be published, Shun is drinking the summer away, Donald's set up a business and Amy's band is coming to stay.