Abandoned by her father, Nanami finds herself homeless when she meets a man who offers his own home to her. His home turns out to be a shrine where his supernatural household awaits the return of their lord and master after a 20-year absence.

The land under Mikage Shrine's protection includes Isara Swamp and Himemiko, its guardian mistress, comes to pay her respects to the new land god. And Nanami's divine matchmaking powers are put to the test for the first time.

Nanami decides to hold an autumn festival at the shrine to let the locals know that it's not abandoned or haunted. But as she prepares for the festival, Otohiko comes along to throw a wrench into things.