Three months ago, Ishaan was a junior cartographer at the Survey of India, a man who spent his days tracing rivers that had already changed course and borders that existed only on paper. He was good at his job—meticulous, patient, the kind of person who could stare at a contour map for six hours and call it a Tuesday. But he was not a spy. He was not a hero. He was just a man who had stumbled into a secret while cross-referencing colonial-era land records.

Outside, the sound of galloping horses. Gunfire. Screaming.

"The constellation is shifting. Find the seventh star."

He placed the feather against the door of light. The world inverted. Color drained, sound collapsed, and for one terrible, eternal moment, Ishaan Bhaskar—cartographer, skeptic, ordinary man—became unmoored from time itself.

When he opened his eyes, he was standing in a room he recognized. His own study. But the books on the shelf were different. The calendar on the wall read: September 10, 1857 . And sitting across from him, sipping tea from a porcelain cup, was a man who looked exactly like him.

The secret was this: in 1857, a group of Indian astronomers and rebels had hidden something. Not gold, not jewels, but a map. A map that didn't chart land or sea, but time itself. They called it the Kāla Yantra —the Time Instrument. The British had hunted for it, tortured for it, and eventually declared it a myth. But Ishaan had found a reference in a forgotten ledger at the National Archives, tucked between a shipping manifest and a dead clerk's diary.