The first-generation hunter Cha Eunha, who had gone missing inside the mysterious and secretive Unknown Gate, is back.

Clad in a jet-black dress and carrying a parasol, she had no choice but to stay inside the gate to save her comrades.

After surviving by taking down monsters, a human unexpectedly appears before her.

And finally—Eunha returns to the real world.

"Welcome to the world 30 years later, senior."

What unfolds before Eunha...
is a world 30 years in the future.