After losing their members in a mystical and strange catastrophe, Tai, Deshi and Sying seek to discover what has happened and whether they will still be able to live their lives normally even without sight and hearing.

In the planet Jormungand lives a civilization of vikings composed of 9 clans and 1 king,they′ve been at war for years with the Dragon Empire, however for the last 15 years there hasn′t been any acts of war from both parts,but now... that will change.