This is the collection of the Chronicles, from Tale of the Toa, Beware the Bohrok, Makuta's Revenge, Tales of the Masks, and I do believe even the novelization of the first movie, Mask of Light.
These five books in total create the 2001-2003 storylines in the Bionicle universe, which has only been seen in comics Lego Club members get, as well as online games which aren't that active anymore.
For fans who have read the comics and/or flash videos from the game, etc, I still recommend this series for while it brings up some familiar tales, it brings up some entirely new ones unseen anywhere in the genre.