In the world devastated by the witch Elena Mercurio, humanity is on the brink of extinction. Elena, with her powers and loyalty to the Demon King, has cornered the humans, who prepare a desperate strategy to stop her.

Teleported to the future, without her powers and in a human shelter, Elena must adapt and survive without revealing her true identity. In her new surroundings, she meets Taro Yushia, a young dreamer who admires the "Hero of Creation" and yearns to travel abroad to help those in need. As Elena plots her revenge, Taro introduces her to the human community, showing her a side of humanity she has never seen: hospitality, kindness, and dreams of justice. Despite her intentions of destruction, Elena begins to question her mission as she sees the positive impact of humans on her life.

Will Elena be able to continue with her plan for revenge or will she be influenced by Taro's values and his dream of a better world? This is the story of a powerful witch and an idealistic young man, united by fate on a journey that could change the future of the world.