Something happened in the backyard, with six adults and three children in attendance, and everybody has the feels about it.
But you'll have to wait more than 200 pages to find out what happened, because the author keeps you in suspense through half the book as chapters flip back and forth between "we still haven't recovered from the barbecue" and "the day of the barbecue."
If I hadn't been reading this for book discussion, I probably would have quit at about page 25: too glossy and suburban for my taste. But I can't actually say I disliked the book overall - I'm gonna give it more of a meh, with bonus points for the quality of discussion that can (and did) spin out of it. Friendship, marriage, responsibility, guilt, sex, mental health - it's all in there.