1. Lost

Yes, as soon as the plane crashes and you're in the water, you are playing. There's not much more you can do other than swim to where there is no fire. The tail end of the plane will sink, but you can only go to the obelisk in the ocean. Get a good look at the moon, take one last breath of the fresh air, and just go inside (there's really nothing else you can do).

Once inside all you can do is follow the lights. You'll enter a sub-like elevator and you're treated to a nice little cutscene.