Once upon a time, there was a witch named Elaina. Inspired by her favorite book, Elaina ventures out to see the world she's read so much about. Like a leaf on the wind, she travels from one country to another, looking to sate her inquisitiveness and searching for new experiences. Exploration and curiosity drive her journey. She's confronted by humanity in all its forms, whether strange, bizarre, or emotional and with each meeting, Elaina would become a small part of their story, and her own world would get a little bit bigger.

Four ownerless androids shack up in an abandoned house, but with no electricity to recharge themselves, they face the threat of a forced shutdown. To get utilities up and running, they rally together to perform at Babel, the epicenter of entertainment where singers sing their way through a tournament for prize money. Will this android boy band have what it takes?

The distant future, 5012. The sudden aerial invasion of Earth by＜ Aliens ＞ and their creations ＜Machine Lifeforms＞ led mankind to the brink of extinction. The surviving number of humans who took refuge on the moon to organize a counterattack using ＜android＞ soldiers to recapture Earth. However, the war reaches a stalemate as the ＜Machine Lifeforms＞ continue to multiply infinitely. In turn, humanity deploys anew unit of android soldiers as an ultimate weapon: ＜YoRHa＞ Newly dispatched to Earth ＜2B＞ joins ＜9S＞, the analyst currently stationed there, where amid their mission, they encounter a myriad of mysterious phenomena... This is the story of these lifeless ＜androids＞ and their endless fight for the sake of mankind.