Don and Rosie are about to face their most important project. Their son, Hudson, is having trouble at school: his teachers say he isn't fitting in with the other kids, and they'd like Don and Rosie to think about getting an autism assessment. As his parents debate whether a diagnosis might help or hinder, Hudson has his own ideas. Meanwhile, Rosie is battling Judas at work, and Don is in hot water after the Genetics Lecture Outrage. The life-contentment graph, recently at its highest point, is curving downwards. For Don Tillman, geneticist and World's Best Problem-Solver, learning to be a good parent as well as a good partner will require the help of friends old and new. It will mean letting Hudson make his way in the world, and grappling with awkward truths about his own identity. And opening a cocktail bar.