Jintae Seo and his younger sister Jina, a purple-eyed albino, are separated after being kidnapped by human traffickers. After two years of torment, Jintae is rescued by an assassin named Shin Kim. After years of training, Jintae, now an assassin himself, follows a lead to Hong Kong to find his sister. After accidentally getting involved in a gang war, it is revealed that Jina is apparently an assassin working for Kai Liu, another albino, who is rebelling against the Triad, and claims that Jina is his half-sister. Can Jintae stay alive long enough to reunite with her?

(Source: WEBTOONS)