Have you ever had the feeling that someone was watching you? It's not the kind that makes you turn around.. The kind that lingers in the back of your mind, quiet enough to ignore... Until you can't.

For Lena and Miu, five years of marriage were nothing more than a cold prison masked by perfection. As the word "regret" became their final exchange amid the fury and the screech of slamming brakes, death refused to claim them. Hurled back in time to when their love had just begun, can they mend a destiny already fractured-or will they choose never to be together in the first place?