Life on the rivers in Scotland is not so simple anymore.
In a grueling quest of the North Sea, Kai and Dune have discovered the Higgins’ secret legacy: extraordinary aquatic abilities and ties with mystical creatures. But when winter vastly approaches, the boys find their sister, Laiken, in danger. The brothers must embark on their second journey across the whirling waves. With more at stake than ever before, the Higgins are thrown on a new adventure—one that challenges their fortitude, tugs at the knots in their family bonds, and tests their faith in the Clan.
Frost, froth, and darkness are falling… What lies in wait at bay?