Tilda Asquith-Hyde has it all, or so it seems. An apartment overlooking the Thames, a flash car, designer clothes and money. Plenty of it. But Tilda's world is crumbling. The death of her mother and the breakup of her long-term relationship opens a void in her life that pushes alcohol from being reliable friend, to dangerous partner.

After a chance encounter with a friend and her baby, Tilda seizes upon the idea that motherhood will be the missing piece in her lonely life.

Lana Edwards and her partner Joel are scraping along in life. Lana is desperate for a child, but age and deteriorating health are against her. In one final effort, Lana and Joel agree to divert the only money they have into private IVF treatment - seemingly, their last realistic chance to have a child.

Unknown to each other, Tilda and Lana access IVF treatment, Tilda opting for a sperm donor and Lana and Joel using their own fertilised egg. Both women successfully deliver healthy babies. Their prayers surely answered.

Yet, within moments of birth Tilda emphatically rejects the child that is placed in her arms, whilst Lana is going through her own rollercoaster of emotions; her joy visible to all, her doubts hidden from even those closest to her.

Lana and Tilda's lives are about to intersect, setting off a devastating chain of events with far-reaching implications.

Will Lana and Tilda be able to 'do the right thing' for their children? And at what cost?