Intrepid young explorer Sean Anderson (Josh Hutcherson) traces a mysterious distress signal to a remote island that's not on any map, and embarks on a daring rescue mission while encountering a vast array of mythological creatures in this follow-up to 2008's Journey to the Center of the Earth. Joined by his new stepfather (Dwayne Johnson), an adventure-seeking helicopter pilot (Luis Guzman) and his headstrong daughter (Vanessa Hudgens), Sean navigates the crumbling stone corridors of Atlantis and comes face to face with bizarre life forms while on a mission to track down his long-missing grandfather (Michael Caine). Later, as seismic shockwaves threaten mass destruction, the group must race to escape the otherworldly paradise before the ocean swallows it up.