"Someday I won't be here to guide you. What will you do then?". In the wake of a devastating war, what was once greenery lies as a wasteland. The victor, the nation of Talus, survives as a floating city, forced to plunder the earth for food and resources. On their annual Harvest, they kidnap people, and kill those who stand in their way.. When soldiers come for Ao, he fights back. In a cruel twist, the enemy spares him and abduct his father instead. Now, Ao must venture into the wastelands to rescue him before he is gone for good. Luckily, surviving is Ao's second nature, but it isn't enough. If he is to succeed on his suicide mission, he will have to confront the horrors lurking outside his idyllic home - human and inhuman alike.