In a hidden room of an old boarding house, they found a dresser covered in soot. People say it has a curse on it. For the “X” team, this is an opportunity to unravel a new mystery and outsmart their rivals from the “Vektor Vlasova.” But the farther the kids go into the investigation, the more inexplicable everything becomes: evidence disappears, shadows begin to move, and ancient alchemical symbols seem to come together into a secret message…