Park Ji Sang (Ahn Jae Hyun) is the son of a vampire, who becomes inherited with the same abilities and desire for blood. Though he was initially terrified of his identity as a teenager, Ji Sang grows up embracing that side of him and becomes a surgeon. His hunger and crave for blood is suppressed with a special pill he takes before he goes in for an operation, otherwise, he would quickly transform when he encounters blood. Watch drama online for free.