Emergency physician Lin Shen unexpectedly obtains a mysterious bronze box, drawing him into a curse of time-borne Gu that spans eight hundred years. The instant his scalpel makes contact, he witnesses omens of death over the next three days. His blood gradually turns to bronze, and he discovers a shocking secret hidden in his mother's medical records, one connected to Lin'an during the Southern Song dynasty. As a seven-day countdown to death begins with the opening of the bronze box, he must unravel the deadly rules of a time loop, caught between modern medical instruments and oracle-bone prophecies...
