Mancers communicate with either beings of the light or dark. Kavet is the capital of Quinacridone. A special forces group called the 126 are charged with keeping the city free of Mancers. A mixed bag of citizens are entangled in a plot between Numen "royalty" and Abyss "royalty".
The mixed bag is just that. People from multiple ways of life are thrust into the underworld of the Abyss to fulfill what they think are their goals. SPOILER ALERT, they may not be their goals and Mancers may be sorcerers.
The story is a bit convoluted. There seems to be an intent to provide adult themes with mixed sexual encounters. The encounters are alluded to and certainly not detailed. I'm not sure why they were even deemed necessary.
The mixed bag becomes a team of sorts and accomplishes what they think they were meant to do.
This book may have been received free of charge from a publisher or a publicist. That will NEVER have a bearing on my recommendations.