When celebrated internal medicine specialist Petros Sperelakis is almost killed by a hit and run driver his daughter Thea, also a brilliant physician, must battle her brothers who insist that treatment be witheld. As Thea uncovers the facts surrounding the disaster, it seems more and more to be no accident. The solution to the mystery is trapped in her father's brain, until he looks at Thea and begins to slowly blink a terrifying message.