In the 21st century, thousands of years later, descendants of the just Murong family migrated to Earth to protect this homeland. Soon, they received bizarre cases in the detective agency they opened, and the victims were all drained of their blood,Shaped like a skull. After careful comparison, Murong Xue, Murong Xia, and Grandma inferred that it was the work of remnants left by INFERNO thousands of years ago, and it is very likely that they were planning something for the Crystal Stone. Everyone decidesFirst, hide the crystal stone and divide the troops with friends Zimo and Chi Dui, who are also superpowers, to investigate the background of the case.