Every day, Neil passionately spreads word of his father's sighting above the Cloud Sea, which has been dismissed as a lie by everyone else. In a quest to clear his father's name, Neil embarks on a journey to break through the Cloud Sea and discover the truth. Along the way, he learns that the Cloud Sea's existence is a massive conspiracy orchestrated by the Genians. As Neil navigates this perilous landscape, he realizes that his companion is both a friend and an adversary.