A Tang Dynasty imperial preceptor and a modern campus belle accidentally switch souls! He wears a school uniform and greets people with a clasped-hands salute, solving math problems with an abacus and turning the school upside down. She dons court robes to perform a sacrifice to Heaven, using her knowledge of physics to put Tibetan envoys in their place as she fights to survive in the imperial palace. They can speak across the ages once a day, but neither knows that a shocking conspiracy lies behind the soul swap. Can they break the scheme and return to their own bodies?
