In the city, there have been a series of incidents where people have suddenly turned into mummies and died in mysterious circumstances. Jin and Kei join Undercover's Ent-S, who specialize in undercover investigations, and immediately begin their investigation. The victims who died in mysterious circumstances had recently purchased a chemi-medic called Shiner 05, which has been getting a lot of attention lately. What is the true identity of the black box that Tazaki, the president of the company that developed this product, is hiding...?
