For over four centuries, the Takamimi Shrine has stood in Tokyo, housing the local goddess: Elda, a magical elf summoned from another world. The immortal elf has been served for 15 generations by the family that summoned her during the Edo period. Now, after Koito Koganei turns 16, this duty falls to her. As Elda's shrine maiden, Koito must balance her duties with her daily school life. This proves difficult because Elda is a complete social recluse who loves video games, collecting toys, and eating snacks. To encourage the lazy shut-in to experience more of the outside world, Koito splits her time between indulging Elda's various hobbies and getting her to interact with the rest of humanity. Along the way, Koito learns more about the area's history and what makes the goddess so loved and spoiled by the locals.