The young angel Nanael lives his peaceful life in heaven and wants to become a Heavenly Blacksmith. But one day, an accident happens and she is struck by dark magic, and as a result, the whites of her eyes turn black and her pupils turn red. Because of this, her halo is taken away and she is banished from Heaven to Earth. How will Nana survive on Earth where everyone is her enemy? Hopefully she can do it with her artefact making skills.