As the monster slayer troops, also known as 'Sretu', no longer functioned as it used to, humans became monster feed.
'Jin Cheongdo', who has been living in a world full of monsters for his entire life, uses a legendary item 'Midwood', to turn back in time, for the sake of killing 'Ian' who was the centerpiece of this whole mess...

괴물처치부대 '스레투'가 사라진 지금. 인간들은 괴물들의 먹이가 되었다.
괴물이 가득한 세상에서 평생을 살아온 '진청도'는
전설의 아이템 '미드우트'를 이용해 과거로 가서
이 사태를 초래한 '이안'을 죽이려 하는데...