Hei Xiazi, once a legendary tomb raider, gives up the trade for good to raise his adopted daughter Ningning, who carries the mysterious “Bloodline of the King of Hell,” and becomes a full-time dad. The sudden appearance of his old partner and ambiguous love interest, Xie Yuchen, disrupts their peaceful life. To put an end to the danger posed by his daughter's bloodline, Hei Xiazi has no choice but to team up with Xie Yuchen and explore another mysterious ancient tomb. As they go, the feelings they buried deep resurface, becoming entwined with a thousand-year conspiracy surrounding the “Bloodline of the King of Hell.” They must find a way to balance protecting the child, dealing with the various forces at play, and figuring out what they mean to each other.
