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.
But my dad worked and wasn't 
home in the evenings sometimes.
pero como papá a veces
trabajaba incluso de noche,
mas às vezes, meu pai
varava a noite trabalhando.