Joanna and Josh have a happy marriage and a thriving garden nursery business, specialising in orchids. But behind all the sunshine and serenity lurks something unsettling. Joanna's scheming sister Christina is in the passionate pull of the Lawrence's arch rival Peter Rossi, a man who'd do anything to undermine their business. Joanna herself is behaving bizarrely, disappearing without explanation, and refusing to be drawn on her activities.Joanna is carrying a terrible secret. She is dying from a brain tumour. And more than anything, she wants her husband to be happy after she has gone, even if it means leaving him with another caring woman...