Cha Eunha, a first-generation hunter who disappeared inside the mysterious Unknown Gate has returned. Wearing a black dress and carrying a parasol, she stayed behind to save her comrades and survived alone, fighting monsters for decades. Then one day, a human appears before her and Eunha finally finds her way back to the real world.

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

What awaits her is not the world she left, but one that has moved on without her.