The appearance of the masked man instantly heightened the tension.

"What exactly is your purpose?" Conan asked, glaring at the masked man.

The masked man sneered, "How could you ignorant fools possibly understand my grand plan?"

Ran Mouri rushed forward: "No matter what your plans are, harming innocent people is a crime!"

The masked man waved his hand lightly, and a powerful force repelled Ran Mouri.

"Ran!" Conan was extremely anxious.

Lin Yu immediately activated his high-tech equipment and launched an attack on the masked man, but the masked man seemed to have an invisible shield around his body, which easily blocked all the attacks.

Nightshade seized the opportunity to circle around behind the masked man, attempting a sneak attack, but was detected by the masked man, who swung his hand back and sent Nightshade crashing to the ground.

Ai Haibara calmly observed from the side, searching for the masked man's flaws.

"Everyone, let's go!" Conan shouted.

The group attacked the masked man again, but the masked man's strength far exceeded their expectations, and their attacks all missed.

“This can’t go on,” Ai Haibara said.

While dodging the masked man's attacks, Conan pondered a countermeasure. Suddenly, he noticed that the ground beneath his feet trembled slightly when the masked man unleashed his power.

"Attack his feet!" Conan shouted.

Everyone understood Conan's meaning and focused their efforts on attacking the ground beneath the masked man's feet.

The masked man didn't react in time and stumbled.

Conan seized the opportunity to rush forward and engage in close combat with the masked man.

Ran Mouri also rejoined the battle, and her karate skills displayed tremendous power.

Lin Yu and Ye Ying harassed the masked man from both sides, preventing him from concentrating on dealing with Conan's attacks.

With everyone working together, the masked man gradually found himself at a disadvantage.

"Damn it!" the masked man roared angrily.

He suddenly unleashed a powerful force, blasting everyone away.

“Even if you can suppress me temporarily, you can’t stop my plan,” the masked man said.

Conan stood up: "As long as we're still here, we won't let you succeed."

The masked man laughed loudly: "You are too naive. This city is about to descend into chaos, and I will become the new ruler."

After saying that, the masked man turned and walked deeper into the basement.

"We can't let him get away!" Conan shouted.

The group followed closely behind and entered a huge laboratory.

The laboratory contained various strange instruments and a bottle of liquid that emitted an eerie glow.

"What is this?" Lin Yu asked.

The masked man said smugly, "This is the ultimate weapon I created. Once activated, the entire city will be under my control."

Conan realized the seriousness of the situation: "We absolutely cannot let him activate this weapon."

They charged at the masked man again, engaging in a final, desperate battle.

During the fierce battle, Ran Mouri was unfortunately injured.

"Ran!" Conan was extremely anxious.

But Ran Mouri resolutely said, "Don't worry about me, go stop him."

Conan gritted his teeth, becoming even more determined to defeat the masked man.

After a fierce battle, Conan finally found the masked man's weakness and successfully subdued him.

"It's finally over," Conan said wearily.

They successfully thwarted the masked man's plot and rescued all those imprisoned.

The city returned to its former tranquility, and Conan and his friends once again became legendary heroes in people's mouths.

However, they knew that more challenges awaited them on the road ahead, but they were fearless, for justice would never be absent...