After successfully solving the museum artifact theft case, Conan and his friends once again became the focus of the city. However, they had no time to bask in their glory, as new clues emerged, leading them into an even more complex mystery.
One day, Kogoro Mouri received an anonymous phone call. The voice on the other end was deep and mysterious, saying only one sentence: "Investigate the fire ten years ago." Then he hung up.
"A fire ten years ago? What does that mean?" Kogoro Mouri asked, puzzled.
Conan and his friends immediately began investigating the relevant information. They discovered that the fire ten years ago occurred at a chemical plant in the city, causing enormous damage and casualties. However, the investigation results from that year seemed somewhat rushed and vague.
“There’s definitely something wrong here,” Conan said.
They decided to investigate this old case thoroughly. First, they located some of the employees who had worked at the chemical plant back then.
"That fire was terrifying; many people couldn't escape," a veteran employee recalled.
"Do you think that fire was an accident?" Ran Mouri asked.
The veteran employee hesitated for a moment and said, "I can't really say, but it just feels a bit strange."
During the investigation, Conan and his friends discovered some documents that had not been made public at the time, which mentioned that the chemical plant seemed to be conducting a secret experiment before the fire.
“This might be the key,” Lin Yu said.
They continued their investigation along this lead, only to discover that someone was secretly obstructing their investigation.
“Someone doesn’t want us to know the truth,” Ai Haibara said.
On one occasion, while searching for evidence in an abandoned warehouse, they were suddenly attacked. A group of men in black rushed in, attempting to seize the documents from their hands.
"Protect the evidence!" Conan shouted.
Ran Mouri and Lin Yu fought back fiercely against the men in black. Conan, meanwhile, took the opportunity to escape with Ai Haibara and search for a safe place.
During his escape, Conan discovers a hidden basement.
“Maybe we’ll find what we’re looking for here,” Conan said.
They went into the basement, which was filled with various experimental equipment and documents.
“Look, these documents record the details of the experiment,” Ai Haibara said.
Just as they were about to examine the place more closely, the basement door opened, and the man in black chased them in.
"Oh no, we've been discovered!" Conan exclaimed.
They engaged in a thrilling chase with the men in black in the basement.
In the end, after a thrilling adventure, Conan, Ran, and the members of the Detective Boys, relying on their unparalleled wisdom and unwavering courage, successfully escaped the mysterious and dangerous men in black. Carefully carrying the crucial document, they hurriedly left the eerie basement.
Once they were back in safety, they immediately began to study the document in depth. As time passed, they gradually uncovered a shocking secret—the experiments conducted by this chemical plant years ago were actually closely related to a new type of chemical weapon that had never been heard of before!
"This is absolutely terrifying! If such a devastating chemical weapon were to fall into the hands of those with ill intentions, the consequences would be unimaginable!" Even the usually composed Kogoro Mouri couldn't help but show a worried expression as he spoke in a heavy tone.
Faced with such a dire situation, Conan and his friends made a decision without hesitation: no matter how many difficulties and obstacles awaited them, they would continue their investigation and were determined to find the mastermind behind everything to prevent the crisis that could lead to disaster from spreading further.
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