Three playable protagonists in one Telwynium book? The rules of the world are not what they were explained to be? No illogical puzzles, just brain-melting ones instead? Grand story, if a bit on the "dark beings aren't actually evil" cliche and great characters round out this excellent adventure. 

Also, if you're just in this for the story, the game, as usual, comes with a walkthrough. Though if you decide to consult it, be warned: it's not nearly as well-written as before. It'll get you through the game, yes, but it may be hard to discern at times.