Four ordinary twelve-year-olds. One sacred school. A sound older than memory. Aarav Mehta — the copper coil Aarav sees patterns everywhere: in symbols, in silences, in the small ways people give themselves away. Brilliant, anxious, and terrified of being ordinary, he fills battered notebooks with markings he cannot yet explain — until the day the school begins to answer them. Veer Sharma — the iron star The brave one, the loud one, the boy who cracks a joke before fear can catch up with him. Beneath the noise, Veer carries the weight of a family that sacrifices everything for him — and a dangerous question: what is the point of power, if it cannot fix the ones you love? Kavya Iyer — the sandalwood tiger Animals trust Kavya before people do. She feels the world too deeply — every frightened stray, every hidden sorrow — a gift that has always left her feeling alone. At Panchanad, for the first time, something ancient recognises her not as strange, but as needed. Meera Sethi — the silver bell Quick, curious, and impossible to fool, Meera notices what everyone else walks past: the mismatched bricks, the sealed corridors, the secrets a centuries-old building would rather keep. When her bell rings its one small note, something hidden is always waiting to be found. The Keeper & the Companions Acharya Satyadev — the keeper To the school she is an ordinary history teacher — plain sari, silver hair, a mask like everyone else. But Acharya Satyadev has spent twenty-five years guarding a secret written in her grandfather's hand, waiting for the children the old pages promised would return. When the sound wakes beneath the Mound, she is the only one who understands what it means. Kapi — the watcher A grey monkey with bright, knowing eyes, Kapi appears where he is least expected and often least wanted. Ragged, clever, and impossible to shoo away, he seems to understand far more than a monkey should — and to have been waiting on the Mound for a very, very long time. Laddoo — the guardian at the threshold A small brown street dog with one folded ear and amber eyes, Laddoo keeps to the edges of things. It senses what others cannot — trouble on the wind, a shadow that shouldn't be there — and where it chooses to stand, the children learn, is never an accident.