Natsume and his friends go to a distant hot springs to help with the renovations.  When he arrives, he meets an old friend of Tanumas, but he quickly gets caught up in local youkai trouble.  Tanuma's old friend is actually a youkai, and she threatens terrible things if Natsume reveals her secret.
When humans feel this way,
Esto es lo que hacen los humanos
en estos casos, ¿no?
Quando humanos se sentem assim,