In parallel time and space, Jie Yuchen sacrificed his life in the secret place of Yuyu to protect everyone, and his son Jie Nian, carrying the memory of "Wu Xie indirectly caused his father's death", was drawn into the main time and space of "Tomb Robbers Notes" by the cracks in time and space.
When he first arrived in the main time and space, the 16-year-old Jie Nian reunited with his father Jie Yuchen who was still alive, but he was full of hostility towards Wu Xie in the main time and space, believing that he would make the same mistake in the parallel time and space again. While hiding the secret of Jie Nian's time travel, Jie Yuchen reconciled the conflict between him and Wu Xie, and at the same time faced the pursuit of the Space-Time Administration (infiltrated by "it").
From the forced cooperation in the Xisha Undersea Tomb, to the sacred tree Wu Xie in the Qinling Mountains sacrificing his life to save Jie Nian, to the two of them fighting back the enemy side by side in Yunding Tiangong, Jie Nian gradually discovers Wu Xie's responsibility in the main time and space, and slowly lets go of his grudge. Then everyone explored the Snake Marsh Ghost City and the Zhang Family Ancient Building, uncovering the truth about the split in time and space and the conspiracy of "it" (alien consciousness). In the end, Jie Nian joined forces with Jie Yuchen, Wu Xie, and Iron Triangle, using blood resonance and multiple powers to fight against "it" and the threats of time and space, and protect the order of time and space. Jie Nian also completed his growth during the adventure, and became a reliable comrade-in-arms with Wu Xie.
