The court of Wu Zhou is fraught with intrigue, with hidden currents swirling beneath its prosperity. The young Su Wuming first makes his mark by solving one strange case after another with keen insight, catching Di Renjie's eye and becoming his personal disciple. Master and student join forces to uncover the secrets of an ancient temple and the mysteries of the human heart, confront a strange beast that can hide and haunt people's dreams, and unravel bizarre cases entangled in political power struggles. Di Gong teaches him the art of investigation, and Su Wuming carries on his mentor's spirit. With a scholar's insight, he pierces the veil of mystery; with intelligence and strategy, he untangles the clues. Amid the mists of the High Tang, they write a legendary tale of two investigators, united in uncovering the truth.