Atlan is a city built on the back of a living giant beast. Every inch of the land breathes and every street is filled with life. Young Ryan is a "listener" who can hear the subconscious whispers of the beast. However, this time, what he heard was the echo of doomsday from the abyss - the giant beast was awakening, and an all-devouring disaster was about to come.
The city's governing council dismissed his warnings as lies and declared him public enemy number one. In order to save his only relative and his crumbling home, Ryan was forced to form an alliance with a mysterious intelligence dealer and an aristocratic girl with different aspirations, and sneak into the underground blood of this city of bones.
They are about to uncover a horrifying truth that has been concealed for generations: human prosperity has always been based on the enslavement of giant beasts. Now, the lie is about to collapse, and beneath the abyss, that angry heart is starting to beat again. Ryan must use his weak voice to respond to the anger of the entire world before the end comes.
