Legends of The Frozen Siblings

When Alda thought his family would be together again when his father returns, all of that was turned upside down when he and his siblings discovered that their mother was murdered by one of their family members, after a few investigations. It shocked them when they found out the killer was their stepmother. And their step-siblings don't believe a word they say.
Seeking aid from their king, their father, Algrim. He was furious with them for making a false accusation.

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Alda struggles to control his new powers, so does his siblings. Years after that they embark on a journey back to their origin to avenge their mother.