Light blue fibers, bloody plastic pieces, size 44 footprints... Clues to the corpse case are scattered like puzzle pieces. Wen Xu decodes corpse language at the autopsy table, and Gu Ye pursues the murderer. When the conclusion of "dismemberment before death" meets the clues of dumping the body, fragments of childhood memories flash forward. What they spell out is not only the outline of the murderer, but also the bonds buried by time - this pursuit is to seek justice for the dead, and to find reunion for the lost souls.