The Cloud Sea is dying. They don’t know how, they don’t know why… but it’s dying.

For almost a millennium now, the mining colony of Onda has been stuck in the shadow of Altera, needlessly tortured and oppressed by it’s tyrannical ruler: the Iron Incursion. One day, Alex and Serena fall from the sky, caught in a whirlpool on their way to discuss the crisis, ending up in the Dark World of Onda. With the help of a skittish fortune teller called Ambor, and the mysterious masked rogues known as the Masqueraiders, it’s up to these heroes to bridge the gap between land and sky, and lend Onda the support they need to save the world one last time.

Yet, despite their confidence, the prophesised ‘Fall of Altera’ draws near, a cataclysmic disaster set to wipe out both worlds… unless Ruby Kabashima, fresh from the future, can prevent it with the knowledge he has. As the judgement day approaches, a new era begins to dawn all over the planet.