Raimy, Piper and Hadley have returned from their last adventure, barely escaping the World Serpent. But there's no rest for these young heroes. Uncle Abe has found another demon, in ancient Japan. The three kids must travel to the land of the samurai and ninja assassin. Their mission: Stop the eight-headed demon Orochi from opening a door to the underworld, releasing an army of undead. However, things start off bad and get worse from there. Piper is separated from the other two, alone and lost in a strange place. But that's not all. She's trapped in the house of Orochi. Can she evade him and stay alive? Will Raimy find her before the demon does? And what kind of trouble will Hadley cause this time around?