She returned from the mysterious Unknown Gate, shrouded in secrecy. Cha Eunha, the first-generation hunter who disappeared 30 years ago. In a black dress and an even blacker parasol. In the early 2000s, the place where they were trapped was an enigmatic gate. If someone wanted to escape, one person had to remain behind... "It's better for you to live than me." Eunha sacrificed herself for her colleague, Lee Jun, and killed monsters to survive. When there were no more monsters to fight, a man appeared, "You're the boss here." Shin Siwoo, an S-class hunter she'd never heard of. They barely cleared up the misunderstanding and left the gate, but '30 years have passed...?'. The world had changed too much. Moreover, her old colleague, Baek Ijun, whom she met after a long time, said, "I hate the fact that someone like you is a hunter." - He was no longer the same person Eunha remembered.