What happens when a young boy with the gift of archery and parkour, The younget and the only boy of three is left abandoned by his sisters and left to fend for himself in the undercity?

Queen Anna was wondering about having a child. So, she went to an orphanage to adopt one. While visiting, one boy caught Anna's interest, and she wondered if he was, in any way, like Elsa before the Eternal Winter. As a result, she took him in, wanting to help him the same way. However, the boy has fire powers and a dark past. In addition, he claimed that he was not born with this power and that someone is after him to remove this essence so as to awaken the fire god, Surt. Can the sisters help control or remove his powers in time, before the fire god awakens and turns the Earth into an eternal hell-hole?