Little do Paloma and Arnab know that intrigues of a dark kind are to haunt them throughout their stay in Meghalaya ... For the moment, Pal and Knob are too taken up by Yuriancy, the local Chief's "ka khadduh", or youngest daughter and her promise of taking them to the cave in the Sacred Grove. But an adventure is bent upon following the children wherever they go ... What do the children find in the cave that is a potent threat to national security?