Changing Past for better FUTURE

After awakening Dragoon MSUV and after the final battle with Zeus , Tyson comes to know that the four dark sacred bit-beasts i.e., Dark Dragoon, Dark Dranzer, Dark Drigger and Dark Draciel were trying to awaken as in the last battle they somehow broke the seal after they were sealed again....
In order to make Dragoon powerful and replace the seal ,Tyson goes back in time......

With previous experience and Dragoon, will Tyson be able to save the world?????