本剧摘要
Would there be grades even for blood? A father and son, homeless, wander from motel to motel, selling collected blood to vampires. They always receive a C grade. Hae-don, after asking for the secret from a man who received an A grade, becomes troubled. Eventually, he decides to draw his son's blood. What grade will his son's blood receive? Is a person's status predetermined fro...
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