That's a very good question.
This storyline by Toa Gonel is superb, along with anything else he has written.
The Fractures storyline is also very well done, also along with anything else he has written.
The Pirates Universe is good, as well as anything else BionicleChicken has produced.
There are many other fantastic stories on the Custom BIONICLE Wiki that we would be happy to direct you to. Feel free to join our Discord server which can be found on the website.
Also, as a side note, is the story you're referring to Creeping In Our Souls, by any chance?