A young woman named Ami discovers her grandfather, a famous photographer, murdered in his own house while visiting him. After the fire on the estate is put out, Ami gives an omamori charm containing a puzzle to Korogo per her grandfather's will. With Ran and Conan's help, they and the police discover three secret photos hidden by the victim in three separate locations inside the estate which resembles a large camara, corresponding to the puzzle. The photos reveal that the victim had been continuously blackmailed three famous individuals for hefty a sum of money: Junko Takehara the actress for her having undergone plastic surgery, Yota Umishima the secretary of a politician for his involvement in election fraud, and Yukio Takayama the doctor for his adultery. However, despite admit that they were blackmailed by Ami's grandfather, the three suspects all deny in killing the victim.