Friends and former college bandmates Elizabeth, Andrew and Zoe have watched one another marry, buy real estate, and start businesses and families, all while trying to hold on to the identities of their youth. But nothing ages them like having to suddenly pass the torch to their own offspring. Now nearing 50, they all live within shouting distance in the same neighborhood deep in gentrified Brooklyn. The summer that their children reach maturity (and start sleeping together), the fabric of the adult lives suddenly begins to unravel, and the secrets and revelations that are finally let loose can never be reclaimed.