The oceans are poison and the land is dying, but the only two capable of saving the world aren't really capable at all.

Undersea siren and undercover agent Rivka emerged from the waters seeking salt for her dying people, despite how deadly the mission and how little she knew of the surface world.

Failed mage Lesya just wanted to be left alone to survive in the wilds of Siberia after losing everyone she loved to the dying planet. Solitude, her puffins, and the inevitable approach of her own death were all she needed.

But a chance meeting between the two sets into motion events that will lead them into the mountains above the land and volcanoes below the sea on a quest that will either save the world or kill them all.