五年前，一种西方病毒席卷中原，感染者嗜血滥杀，被称为“血妖”。世人都知道是欧阳淳用祖传神兵长情剑斩杀病毒源头“妖祖”，但不知，那一战中他的爱人——岳清音的姐姐佩如感染了病毒成为了力量极强的新“妖祖”，尽管丧失理智，却唯独只听欧阳淳的命令，藏在了长情剑的剑匣里。欧阳淳忏悔，为了维持佩如的生命，确实死了很多不该死的人，但他找到了将佩如变回成人的办法，只要办好此事，就去自首。 可就在转化当晚，欧阳逸原形毕露，他想把清音变成新“妖祖”，成为新的武林至尊。邪不压正，欧阳逸自食恶果被感染了病毒，就在他丧失理智，扑向清音的时候，却停了下来，病毒让他丧失了理智，也放下了功名利禄的欲望，更加直面自己真正的内心。

Five years ago a Western virus swept the Central Plains, transforming people into bloodthirsty monsters. They were called "blood demon." Everyone knows that Ouyang Chun used his ancestral divine sword to kill the source of the virus, the "Demon Ancestor", but unbeknownst to him, his lover, Yue Qingyin's sister Peiru, became infected and a powerful new "Demon Ancestor". Ouyang Chun confessed that he had indeed killed many undeserving people to keep Peiru alive, but he had found a way to transform Peiru back into an adult and would turn himself in as soon as he had done so.

5년 전, 서양 바이러스가 중원을 휩쓸어, 감염자가 혈액을 남용하여 죽이는 것을 좋아한다고 하여, 이름이 붙었다."피의 요괴".세계적으로 구양순이 조상신병장정검으로 바이러스의 진원지인 "요조"로 알려져 있지만, 그 전투에서 그의 연인이었던 악청음의 누나 페여는 바이러스에 감염되어 힘의 새로운 "요조"가 되었다. 비록 이성을 잃었지만 유독 오양순의 명령만을 듣고 장정검의 검함 속에 숨겨져 있었다.그는 패여의 생명을 유지하기 위해 죽지 말아야 할 사람들이 많이 죽었지만 패여를 성인으로 되돌릴 방법을 찾아냈고, 이 일만 잘하면 자수했다. 그러나 그날 밤, 청음을 새로운 요조로 만들어 새로운 무림의 지존으로 삼으려는 구양일의 정체가 드러났다. 사악한 기운을 억누르지 못하고, 구양일은 스스로 악과를 먹고 바이러스에 감염 되었는데, 그가 이성을 잃고 청음을 향해 달려드는 동안, 오히려 멈췄고, 바이러스는 그로 하여금 이성을 잃게 하였으며, 공명과 녹을 받으려는 욕망을 내려놓으며, 자신의 진정한 내면을 더욱 직시하게 하였다.

โรคระบาดจากแดนตะวันตกแพร่เข้าสู่จงหยวน ผู้คนต่างเรียกคนที่ติดโรคนี้ว่า "ปีศาจดูดเลือด" เพราะพวกมันดูดเลือดและสังหารมนุษย์อย่างบ้าคลั่ง ทว่าหายนะครั้งนี้ก็สิ้นสุดลงได้เพราะ "โอวหยางฉุน" ใช้กระบี่ฉางฉิงปราบ "จอมปีศาจ" ซึ่งเป็นต้นตอของโรคระบาดได้สำเร็จ แต่สิ่งที่ไม่มีใครล่วงรู้คือ "เพ่ยหรู" ซึ่งเป็นคนรักของ เขาและเป็นพี่สาวร่วมสาบานของ "เยว่ชิงอิน" ต้องกลายมาเป็นจอมปีศาจตนใหม่แทน... ในคืนที่โอวหยางฉุนกำลังทำพิธีช่วยเพ่ยหรูให้ได้กลับมาเป็นมนุษย์ "คนผู้นั้น" ก็ได้แสดงธาตุแท้ของตนออกมาในที่สุด ทางเดียวที่เขาจะเป็น "เจ้าแห่งยุทธภพ" ได้ก็คือ ทำให้เยว่ชิงอินกลายเป็นจอมปีศาจตนต่อไป!

Năm năm trước, một loại virus phương Tây đã càn quét vùng Central Plains, biến con người thành những con quái vật khát máu. Họ được gọi là "quỷ máu."