April 5, 2019: In a cozy brownstone in Brooklyn, the veneer of domestic bliss is beginning to crack. Dan and Isabel, husband and wife, are slowly drifting apart-and both, it seems, are a little bit in love with Isabel's younger brother, Robbie. Robbie, wayward soul of the family, who still lives in the attic loft; Robbie, who, trying to get over his most recent boyfriend, is living vicariously through a glamorous avatar online; Robbie, who now has to move out of the house-and whose departure threatens to break the family apart. And then there is Nathan, age ten, taking his first uncertain steps toward independence, while his sister, Violet, five, does her best not to notice the growing rift between her parents. April 5, 2020: As the world goes into lockdown, the cozy brownstone is starting to feel more like a prison. Violet is terrified of leaving the windows open, obsessed with keeping her family safe. Isabel and Dan communicate mostly in veiled sleights and frustrated sighs. And dear Robbie is stranded in Iceland, alone in a mountain cabin with nothing but his thoughts-and his secret Instagram life-for company. April 5, 2021: Emerging from the worst of the crisis, the family reckons with a new, very different reality-and with what they've learned, what they've lost, and how they might go on.