What I will do here is collect the 動画 from each session and post them. Assuming the story is going to be told with clips only, You'll be able to follow the 'story' without playing the game.
On December 31st, 2007 a mysterious message came on Oceanic Airlines website, telling あなた to go here. I think this is a sign that the ロスト Alternate Reality Game has begun.
Sumary of link: this theory is about a book called flashforward によって Robert JAMES SAWYER who won a HUGO award for the book. Which is about a group of scientists that push a button and a huge machine causes a time rift throughout Earth.