Living in seclusion throughout Fujian, Wu Xie honors his ten-year promise with Zhang Qiling. His tranquility fractures when his uncle Wu Sanxing sends a cryptic text, pulling him into an enigmatic quest. Examining the clues his uncle meticulously concealed, Wu Xie discovers an ancient tomb connected to Wu Sanxing's mysterious past—the fabled South Sea King's Tomb. Before launching his search, Jin Wantang's schemes surface as he confides in Uncle Two, who instead of preventing the mission joins Wu Xie, Fatty, and Zhang Qiling. Together, they venture toward the tomb's secrets, where ancient artifacts and sinister conspiracies lie in wait.