Entwined Worlds

In a world filled with light, a darkness is spreading. Only three girls can stop it.

Avia set fire to her neighbourhood and gave someone 3rd degree burns. Emily dived to the depths of the sea without breathing or holding her breath and controlled the waves when surfing. Astrid caused a major blizzard and made snow angels in a T-Shirt and shorts but didn't get cold. When they each receive letters and are taken away to the land of Uslilia, they find out they are sisters and are the goddesses of fire, water and ice. They learn how to control their powers but is shortly interrupted by the news that the darkness spreading even faster than before from Toruli, Uslilia's dark land. This darkness is caused by Erebus, the powerful god of darkness.
Will they stop him? Or will they be pushed to the limits?