In the forgotten city of Whiskerfall, a giant lynx carries an entire mechanical kingdom within its fur, guarding the memories of a civilization that vanished beyond the floating skies. One night, a young fox carrying the last living lantern enters the hidden city, searching for the mysterious gate that only appears when every clock stops. Along the way, tiny guardians, forgotten machines, secret libraries, flying towers, and a silent blue-eyed cat reveal that the lynx is not protecting the city from the outside world—it is protecting the outside world from what sleeps beneath the city.