After Natsume returned Amana’s name, she accused him of stealing her ring.  He has three days to find and return it before she burns down his house.  To make matters worse, the ring is trapped in the hair of a migratory youkai, and Nyanko-sensei is unable to use his powers.
Nyanko-sensei, something's wrong with you.
Nyanko-sensei, hay algo extraño en usted.
Tienes algo raro, maestro Nyanko.
Mestre Nyanko, tem algo errado com você.