A lone wanderer arrives at the foot of a colossal, sun-scorched tower that rises far above the clouds, once ringed by ocean and now abandoned after a devastating drought known as the Jusant drained the world of its water. Accompanied by a small companion made of water called Ballast, the climber ascends the tower level by level, discovering the relics, homes, and letters of the vanished civilization that once thrived along its heights. With no spoken word, the story unfolds through the environment itself, piecing together what became of the people and the sea that sustained them.