David's life was pretty normal. School, Friends, Girlfriend. Actually, Senna was probably the odd aspect of his life. She was Beautiful, Smart. But there was somthing very diffrent about her. somthing strange. And on the day it began. it happened so quickly. One moment, Senna was with him. The next moment, she was swallowd up by the earth. Her screams echoing from far, far away. David couldnt just let her go. Neither could the others. His friends----and hers. So, they followed. And found themselves in a world they never coukd imagined. Now they have to find Senna and get home without losing thier lives. Or thier minds. Or both．．．．