Hello & Welcome to the forum.
On the English version, there are no add-ons/patches/updates to speak of. This game died a quick death soon after it's release. The Dev's jumped ship, and the game is as it stands, for better or worse.
Please review this Patch forum, before asking further questions on this matter. Just about everything on this subject has been asked, and answered. Just look around.
As to the Story-Line, it will find you. You can go
Here, if you want a rundown on how to kick-start it.