"I have too, and I can prove it!" Pride is on the line when Tyler, Jordon's cousin, calls Annese a liar. After all, no one can go to another world! Instead, Annese proves it by taking Tyler to Asteria. But when the two youngsters and their new friend Odessa fall into a sinkhole, Jordon and Jeremy must come to the rescue-underground! It's harder than they think. The transport pads that go between the islands don't line up, and the enemies down here are almost worse than on the surface. During the rescue attempt, the boys think someone or something is stalking them. They can feel it. But who is it and from where? To make matters worse, they can't get back to the surface the same way they came down. Welcome back to the strange and action-packed land of Asteria. Join the boys and their companions as they run into strange beings, make some friends, and get in and out of some really tight jams, all while trying to rescue a couple of 10-year-olds.