The book tells us a fantastic adventure story happening in an amazing city Olali with an underground maze. The young hero Bell meets Lords Goddess,and then begins his thrilling adventure at the dungeon.In this volume,on the one hand,Bell teams with the ""Backer""girl Lily. Though Bell realizes that this girl who compells him to be her partner has some problmes, the progress of exploring the dungeon goes along well when they are together.On the other hand,the Soma tribe Lily belongs to keeps getting involved in scandals. And the ultimate culprit seems to be the illusive""nectar""in the legend......