Since her mother's death, Lily has withdrawn from the world, trapped in between grief and anger. Upstairs, Siobhan is consumed by her affair with a married man. Her days revolve around his sporadic texts and rare visits. She barely notices the strange girl who lives below and dawdles in the foyer. But Lily is keeping a close eye on her neighbour, whose life seems so much better and more fulfilling than her own. Charts the anonymity and hidden intimacies of modern existence.