In his quest to find his father, Will is plunged even deeper underground. And as if things weren’t bad enough already, he stumbles across a Styx plot with terrible implications for the world above.


威爾為了尋找父親，不斷地往更深的地底世界而去。更糟的是，他偶然發現恐怖組織「斯堤克斯」想對地表世界進行的可怕計畫。