The world is changed, poisoned. The seas have warmed and risen to flood the land.
Trin is part of a team that defy the stormy seas at the new coastline to help heal the oceans. But now Trin is hearing voices from the stormy sea. Is she sick or crazy? Rilla has lived hidden deep in the ocean all her life. Challenging her father’s rulings, she will take the catalyst to transform and ascend, leaving the world of the Abrax forever so she can help the walkers heal Mother Ocean. When two strangers arrive on the high tide, Trin and Rilla’s lives will change forever. Their fates will be intertwined in the place between two worlds.