When Oceanic Flight 815 from Sydney to L.A. crashes on a remote island, the castaways must rely on each other to survive – especially when they discover that they are not alone on this island.
After discovering a mysterious hatch leading to an underground facility, the survivors of Flight 815 find new hope for survival even as the mysteries of the island and its history deepen.
Have the survivors of Oceanic 815 found a way off the island? A new group arrives from an off-shore freighter with the promise of rescue – but they clearly have a very different agenda of their own.
When the future doesn't turn out quite like anyone expected, Jack and Ben join forces to try and convince the Oceanic 6 to return to the island – which is suffering from a very unusual new problem.