A bizarre antique theft at the Midnight Museum draws young detective Xiao Yifeng into a web of intrigue. An old photograph reveals a mysterious connection between him and the stolen ancient ring, while his seemingly kind mentor, Zhu Lei, secretly guides him, trying to lead him astray. An unexpected discovery by intern Wang Tong lifts the veil on the black-market antique trade, and the collusion between the greedy merchant Zhang Bing and the mastermind Zhu Lei gradually comes to light. Danger closes in and the truth remains elusive. How will Xiao Yifeng cut through the fog and uncover the truth behind this baffling case of a disappearance without a trace?
