Catherine lives an enviably normal life with her loving husband, Sam, and their two children. But many parts of her past are shrouded in mystery. When a former flame resurfaces, something inside of Catherine gives way, releasing a flood of trauma she had thought was buried long ago. Lying in the hospital after a complete breakdown, language eludes Catherine. As her fragmented memories of her university days sharpen, the threads of her past and present start to coalesce. Catherine is transported back in time to her love affair with Lucian, a charismatic and complicated artist, with whom she shared a passion that was destined to end in tragedy. Fifteen years after the fateful end of their romance, Catherine must finally confront the events that brought her to crisis, while the fragile pieces of her life begin to shift --- and threaten to shatter.

Luke and Hannah live a happy and stable life in London as they prepare for the arrival of their first child, Samuel. All his life, Luke has known he was adopted, but he’s never felt the need to seek out his birth mother --- until he becomes a father himself. His first encounter with Alice is surreal, a sharp prick that barely scratches the surface of a painful past that neither of them has fully confronted. Alice sinks into memories of her life as a young artist in 1970s London, and of her tragic whirlwind romance with an enigmatic musician who would become Luke’s father. Meanwhile, Luke spirals as he comes face to face with his feelings of abandonment that he worked so hard to bury. But at least Alice seems keen to make up for lost time by looking after Samuel --- until her doting grandmother act takes a sinister turn for the worse.

Beth and her gentle, kind husband, Frank, are happily married, though their relationship relies on the past staying buried. But when Beth’s brother-in-law shoots a dog going after their sheep, Beth doesn’t realize that the gunshot will alter the course of their lives. For the dog belonged to none other than Gabriel Wolfe, the man Beth loved as a teenager --- the man who broke her heart years ago. Gabriel has returned to the village with his young son, Leo, a boy who reminds Beth very much of her own son, who died in a tragic accident. As Beth is pulled back into Gabriel’s life, tensions around the village rise, and dangerous secrets and jealousies from the past resurface, this time with deadly consequences. Beth is forced to make a choice between the woman she once was and the woman she has become.