PROMETHEUS No. 17, an Al from 50,000 years ago, is the product of the most advanced technology from The MOTHS and a representation of their ideal. She is like the mythological Prometheus who helped humans by giving them fire at the end of the desolate apocalypse and a phantom from that ancient era. Today, the sparks of the old age have been reignited on the newly born land. Having shed her responsibilities, PROMETHEUS embarked on a journey to seek her true identity as a "human".