After successfully dismantling a transnational crime syndicate, Conan and his friends once again became heroes in the eyes of the people. Their lives seemed to have returned to normal, but an inexplicable unease lingered in Conan's mind.

One day, on his way home from school, Conan suddenly sensed a familiar presence. He cautiously looked around but found nothing unusual. However, the feeling of being watched grew stronger.

After returning home, Conan told Lin Yu and Ai Haibara about his doubts.

"Could it be your imagination, Conan?" Lin Yu asked.

Conan shook his head. "No, my intuition is right. Something is about to happen."

Just then, Ran Mouri walked into the room. "Conan, why do you look so preoccupied today?"

Conan smiled and said, "It's nothing, Ran-neechan. I'm probably just too tired lately."

A few nights later, Conan was awakened by a slight noise. He quietly got up, went to the window, and saw a dark figure flash across the yard.

"Who?" Conan asked softly.

He quickly put on his clothes and chased after it. The dark figure was incredibly fast, and Conan was in hot pursuit.

As they chased, the shadowy figure disappeared into an abandoned factory. Conan cautiously entered the factory, where a musty, old smell permeated the air.

Suddenly, footsteps sounded behind him. Conan turned around and saw Ai Haibara and Lin Yu.

“We were worried about you, so we came along,” Lin Yu said.

The three searched the factory together, but found no trace of the shadowy figure.

"Did he run away?" Ai Haibara said.

Just then, the factory lights suddenly came on, and a voice came from the loudspeaker.

"Conan, do you think you can catch me so easily?"

"Who are you?" Conan asked loudly.

"I am an enemy you can never defeat; everything you do is in vain." The voice was full of provocation.

Conan and the others searched everywhere for the source of the sound, but to no avail.

Back home, Conan fell into deep thought. Who exactly was this mysterious figure in the shadows? Why did it provoke them in this way?

After some investigation, they discovered that the shadowy figure was connected to the remnants of a criminal organization they had previously defeated. This organization, severely weakened, had been secretly gathering strength in an attempt to exact revenge.

"It seems we can't let our guard down," Lin Yu said.

In order to prepare for the potential threat, Conan and his friends began to intensify their training and improve their abilities.

Kogoro Mouri also noticed their unusual behavior and, after learning the details, decided to help them.

"With a famous detective like me here, you don't need to worry," Kogoro Mouri said confidently.

However, the enemy acted faster than they anticipated. One day, Ran Mouri was kidnapped on her way home from school.

“If you don’t want anything to happen to her, come to the designated location alone,” the kidnapper said over the phone.

Conan was extremely anxious, but he knew he couldn't act impulsively.

"I'll go," Conan said.

Lin Yu and Ai Haibara tried to stop him, but Conan was determined.

Conan arrived at a secluded warehouse as requested by the kidnappers.

"You've finally arrived, Conan." A masked man stepped out.

"Release Ran-neechan," Conan said.

The masked man sneered, "Hand over what you know about our organization first."

Conan calmly dealt with the masked man, looking for an opportunity.

Just then, Lin Yu and Ai Haibara arrived with Kogoro Mouri and the police.

It turns out that Conan left clues before setting off, which allowed them to track him here.

Police quickly subdued the kidnappers and rescued Ran Mouri.

"Thank goodness you're all alright." Conan breathed a sigh of relief.

After this incident, Conan and his friends realized that the enemy would not let them off easily, and they were prepared to face more challenges.