When do you know when the fine line between love and obsession has been crossed? Mark and Kerry have it all-the perfect love, the perfect relationship, and a bright future-or so it seems. But these two people have two very different perceptions of their relationship. In Mark's eyes, theirs is the perfect love-love at first sight. He'll go crazy if he can't have her. When he returns after visiting family abroad, he struggles to find the courage to ask Kerry to marry him. Kerry, on the other hand, is trying to find the strength to say good-bye. She never finds that courage-but she leaves him anyway. Weighed down by a secret she cannot share, Kerry returns to the place she once called home. There she reunites with a family she thought she had lost forever-and meets Derek. Soon she finds herself being torn apart by the love of two men. Can she find the courage to do what is best for her and her daughter, when for so long she has been putting others' needs before her own? When you're obsessed, you'll do anything to have what you want. But when you are in love, their life means more to you than your own. Can Kerry walk that fine line, or will forces beyond her control determine her fate?