On a remote island, a suspected Nanyue site is discovered, and historian Gu Lin invites survival expert Wu Hen to help the archaeological team secure artifacts as a typhoon approaches. Unexpectedly, they uncover a cave far older than Lu Jia's era, leading them on an adventure to unravel an ancient mystery.
| Actor | Role |
|---|---|
 Xiao BoWu Hen | Wu Hen |
 Yu XinyanGu Cong'an | Gu Cong'an |
 Chunyu ShanshanMr. Ruan | Mr. Ruan |
| WWang YananSister Yun | Sister Yun |
 Jin YannaSiren | Siren |
 Jiang ZhenhaoGu Lin | Gu Lin |
 Mo MeilinBrother Ma | Brother Ma |
 Apollo Yu BoLu Jia | Lu Jia |
 Wang YananNot listed | Not listed |
 Yue DongfengNot listed | Not listed |