Okay, just to be clear, The Mysterious Island (2012) is not a great movie. What it is is a fun adventure film, perfect for the whole family.
TSean Anderson receives a message from his grandfather, who claims to have found the “Mysterious Island” that Jules Verne wrote about in 1974. Anderson's stepfather, played by, Dwayne Johnson, helpe him decode the message and then decides tot ake the bonding moment even farhter, heading out of a quest to the South Pacific. On the island of Palau, they hire a tour guide to take them to the island, and his daughter comes along, too. Before long, they’ve arrived at the Mysterious Island, Grandpa shows up. He shows them all the wonders of the isldand, and it is an amazing place, but they quickly realize they need to get off now, becuase the whole place is sinking.
There are of course, all kinds of obstacles, most notably giant bugs, birds and lizards. And trekkig across the jungles...