After Dr Jonathan Knight is blinded in a freak accident, rehabilitation worker Tania Richardson tries all she can to help him accustom to life without sight. As he starts to open himself up she learns more about the enigmatic doctor, and she finds herself becoming drawn to him. However, Tania has a few secrets of her own, ones she cannot tell Jonathan.

When an experimental operation is offered to him that could possibly restore his sight, she realises time is running out as she decides whether or not to admit the dark secrets she has kept hidden for some years – and whether they'll ruin their relationship before it even starts.