Mana has gone camping with Souma, Hiroto, Yuuta, and their father Yuuichi. Though Souma and Hiroto's horseplay is exasperating, Mana enjoys her holiday. But that night, Yuuichi suddenly disappears. When Souma and Hiroto go looking for him, they are attacked and kidnapped. As an eerie laugh echoes through the space, Mana and Yuuta wonder if it might be the work of a youkai. They hurry to tell Kitaro, but...!?
All humans have
a weakness in their hearts.
.جميع البشر لديهم ضعف في قلوبهم
Alle Menschen tragen
Schwächen in ihrem Herzen.
En todo corazón humano hay miedo.
En todo corazón humano hay miedo.
Les humains ont tous
des faiblesses en eux.
Tutti gli esseri umani 
hanno un lato debole nell'animo.
Todos os humanos têm uma
fraqueza em seus corações.
В сердце каждого человека есть слабость.