In this follow-up to the hit Journey To The Center of the Earth, 17-year-old Sean receives a coded distress signal from a mysterious island - a place of bizarre and dangerous life forms, deadly volcanoes and astonishing secrets!  Unable to stop him, Sean's stepfather joins the quest.  Together with a helicopter pilot and his beautiful, strong-willed daughter, they set out to find the island, rescue its lone human inhabitant and escape before seismic shockwaves swallow the island and bury its treasures forever.