Within hours of best-selling author Julian Hartswood being cancelled for reposting a white supremacist, he discovers he has a neurodivergent son called "Austin". Meanwhile, Julian's wife and work partner, Ingrid, calculates that Austin was conceived while she and Julian were first dating.
Austin invites Julian and Ingrid home to have lunch with his "embarrassing" family, while Ingrid contemplates some extra-marital wham wham.
On a bonding tour with Austin, Julian starts filming a documentary about "father and neurodivergent son quality time" to spring-clean his image. But Ingrid and Austin get wise to his Machiavellian ways.
Julian's documentary capturing his growing relationship with Austin is now out in the open and Julian engages an award-winning filmmaker to finish the job. Is bringing Austin to London the perfect treat for him or for Julian?
Austin organises a bespoke celebrity bus tour while Julian contemplates hiring someone to "scrub" his image. Ingrid decides to expand her career, combining her illustrating career with writing.
When Julian gets fired from his publisher and told his remaining books are to be pulped, Austin leads the charge to break into the warehouse to rescue whatever books are left.
Ingrid discovers a former passion while Austin and Julian prepare for the first screening of the documentary, entitled: The Greatest Man I Never Knew - that will (hopefully) rebrand Julian to the world.
Julian is concerned when Austin turns his phone off and leaves the house to have some time on his own. In a boutique gallery in outer London Ingrid prepares for an exhibition of her artwork.
Austin grapples with sudden literary fame when his novel is picked up by an international publisher. Meanwhile his previously estranged father Julian and stepmother Ingrid, sell their beloved Big Bear series to Australian TV.
Julian is dropped from Big Bear's TV deal due to his "reputation", while Ingrid is named creative lead. Austin searches for a British backstory worthy of a book deal.
Austin thinks he's on a date. Greta thinks it's a meeting. Julian goes rogue at the publisher's office, and Ingrid quietly edges toward a Big Bear deal without him.
Austin fakes pop culture tastes to sell books. Ingrid starts her job as creative director of the new show and is confronted by the star, Rodger Corser wanting to change things. Julian bonds with Rodger and ruins everything.
Austin bombs his press conference and book signing, Mel's romance is vetted by the government, and Julian's secret identity as a young queer bee-saving writer is exposed.
After appearing on a controversial podcast and getting Haley fired, Austin faces a family intervention. Meanwhile, Ingrid is auditioning the whole of Canberra to find an actor to play Big Bear before she loses the show.
Austin follows a rom-com manual to woo Haley, Ingrid flirts with Big Bear, and a kiss leads to disaster when the bear head comes off - literally.
Ingrid quits Big Bear, Austin cancels fame, Mel races to stop a resignation, and Haley might be The One. All roads lead to Thunder Thursday - and one gloriously chaotic Canberra bus ride.
