Imogen has always wanted to be a doctor, but the pressure of her job is slowly cracking her fragile mental state; her infatuation with an old flame twisting into something darker. Grace has her hands full as a vet and a harried mother to a recovering anorexic teenager. But when circumstances force her daughter to change school, Grace's carefully-hidden secrets are threatened with exposure. Zoe, a teacher, is blissfully in love with her new boyfriend, but his old school friend, Imogen, still seems to be obsessed with him and now her.
Bec and Kate are sisters, but they couldn't be less alike. Bec lives the domestic dream with her surgeon husband, Stuart, and three perfect children. So why is she so attracted to free-spirited Ryan? Kate's life is hardly a dream. But when she meets Adam - tall, kind, funny - things start looking up. Until she finds out he's been keeping secrets from her. Then there is the incident both sisters are desperate to ignore. Will they discover that some mistakes can't be put right?