An old man speaks of a golden city that lies within a devouring abyss somewhere in uncharted waters; one explorer may be the key to finding both.

Riko, Reg and Nanachi take their first steps into the sixth layer; both wonders and dangers await the trio, but they are unaware they are being watched.

Riko, without possibly knowing the consequences of her words, sealed the villager's fate as soon as she acknowledged Meinya was priceless; the Balancing begins.

Reg cannot remember Faputa anymore; Nanachi is stunned by unexpected news.

The children begin uncovering the village's secrets while searching for each other; Reg is attacked by a snail dragon while on the sixth floor alone.

Riko is told she must sell one of her body parts to get her friend, Nanachi, back from Belaf; Prushka's power is discovered.