Neither are unhappy as such, but there’s dissatisfaction in the air. Chalk it up to the complications and compromises that accompany middle age, marriage and parenthood, sure, but when Dan learns about the publication of Alison’s first novel and tentatively reaches out via social media after years of no contact at all (we’ll learn why, don’t worry), the prospect of ‘what if’ is enough to prompt a reconnection, with the music of their youth building the bridge.