The film combines the legend of 'Plato's' lost city of Atlantis' with 'Jules Verne's '20,000 leagues under the sea' and 'Mysterious Island' along with 'Robert Louise Stevenson's' 'Treasure Island'
'Sean Anderson' (Josh Hutcherson) has been receiving coded messages from his grandfather who had disappeared a few years back.
'Hank'(Dwayne Johnson) 'Sean's' step-dad offers to help work out the code, and using the relevant books locate the position of the Island, which they find doesn't appear on any maps.
'Sean' wants to go and search for his grandfather, 'Hank' after much thought agrees providing he goes too.
The two cannot find a guide to take them to the Islands supposed position in the Pacific at any price, until 'Gabato'(Luis Guzman) who owns a clapped-out Helicopter volunteers his services along with his daughter 'Kallani'(Vanessa Hudgens) in tow.
As they approach the supposed location of the Island they run into a fierce storm, the helicopter begins to break-up.
somehow the four survive the crash finding themselves on a beach, they are on the Island, on which they will discover wondrous places, much beauty along with plenty of danger.
And yes,they soon run into trouble, however 'Sean's' grandfather 'Alexander'(Michael Caine) appears, and saves the four from a giant lizard......the adventure has begun.
'Hank' realizes early on that the island will, in a few days be submerged, they now have to find a way off the Island.
The film has some impressive Special-Effects and '3D imagery to enjoy, it's not the best film you'll see, though i suspect the kids will love it, it is harmless fun throughout.