As a child, Sunny Gibson was abandoned by her mentally-ill mother, who left no trace behind. Now a social worker, Sunny is dedicated to helping children find loving homes - though she's still haunted by the past. So when she finds clues that her newest charge might be her younger sister, she sets out to track down the little girl's mother. But the powerful attorney she needs for the search is proving as inexplicable and distant as he is irresistible.....