As you search for the magical gems needed to power the crown, you uncover a hidden invasion by the Soraks —reptilian shapeshifters who have spent centuries infiltrating human society to prepare for a total takeover. The Legend of the "Tome of All Things"

While the specific file name you mentioned appears to be a multi-part archive for the game , the "story" behind it is actually one of the most faithful adaptations of tabletop role-playing ever made. The World of Solasta

Your group is sent into the Badlands to recover lost artifacts of the ancient high elves for the "New Empire".