At the auction of the Minghu City Convention and Exhibition Center, a mysterious painting "Dark Blue" appeared. Immediately afterwards, deaths occurred one after another. Anyone who got "Dark Blue" would die violently, but even so, all evil forces still flocked to this painting. As the work of the Minghu Public Security Bureau progresses, the secrets hidden in "Deep Blue" also emerge step by step. It turns out that "Deep Blue" contains the formula for South America's top drug "Devil's Blue". Behind this formula, there is a shocking conspiracy, waiting for everyone to fall into the trap, and triggering a battle between good and evil, black and white...