In 1927, Evadne Burns invites her closest school friends to join her for a weekend reunion at her grand home, Winter Manor. The passing of time and the dark shadow of the First World War has shaped them all as women, yet their friendships remain strong. The tragedy of the era has only made them more determined to live their lives to the full.

Evadne is delighted to see Clara and Courtney again, two women dedicated to each other since they were schoolgirls and still unable to keeps their hands off each other, even in view of Winter's servants. There is the more conservative Madge, to remind them of the life they were expected to lead. But most of all, Evadne is pleased to see Edith Richardson, with whom she shared one precious night but left a lasting connection. With Edith, she chooses to share a secret that will affect the rest of their lives, together or apart.