In Inferno, Indigo and Grimya travel far North to the volcanic area where copper is mined. While visiting the town near the mine, she stumbles into the cult of Charcharad that is taking control of the townspeople. Indigo starts to investigate this cult, which leads her to the mines themselves.
There she meets the sorcerer priest Jaskar, and discovers that the cult of Charcharad is in fact controlled by one of the seven demons that she released in her past life as Princess Anghara. Indigo must find a way into the valley where the demon is housed, and with Jaskar's help unleash the power of the fire goddess Ranaya to defeat the demon Aszareel and his hold over the miners.
In this second book of Indigo, we get to see more of Indigo's struggles with her internal demons as well as the first of the seven demons that she must face to end the punishment given her by the Earth mother for releasing the demons in the Tower of Regrets.
I found the imagery in this second chapter of Indigo's story amazing. Louise Cooper shows us a fiery world of lava flows, demons and the people impacted by the beliefs of those members of the cult of Charcharad. There were still times where Indigo's nativity irked me, and a few moments where I wanted to throttle her for acting so stupidly. But all in all, it is a good step into a very intriguing story.