Just after entering the inner sect, Bei Hanfeng receives an unexpected message from his master, Shen Yiqiu, summoning him to Green Bamboo Cliff. He senses something suspicious about the timing of the summons, which comes right after his master killed Zhao Ling. As the ancient temporal grotto realm, Shixu, is about to open, Bei Hanfeng seizes the opportunity to enter this secret realm, which opens only once every hundred years. Within its stone chambers, spirit stones can be consumed to control the flow of time. While exploring the laws of time, he secretly investigates the mystery surrounding his master, steadily advancing along the path to proving the Dao.