"Rivers Converge in the Land of Echoes" follows the adventurous Myrddin and Selwen as they embark on a journey through legendary rivers that wind through ancient lands. Along the way, they uncover the stories, traditions, and mysteries that the rivers carry with them—of lost civilizations, migrating peoples, and the bonds forged by water. Through encounters with river keepers, mystics, and local communities, the duo learns about the deep, timeless connections between nature and humanity. Their journey highlights the importance of unity, environmental stewardship, and the power of sharing cultures and stories for future generations.