Back in the city, Conan and the others, without even taking a break, immediately began discussing how to deal with the threat posed by the "Shadow Alliance".

After receiving basic treatment for his wounds, Kogoro Mouri endured the pain and joined the discussion: "We escaped by sheer luck this time, but the 'Shadow Alliance' will definitely not let this go. We have to take the initiative."

Ran Mouri said firmly, "Dad is right. We can't stay on the defensive forever."

Lin Yu turned on his computer and showed the latest intelligence he had collected about the "Shadow Alliance": "According to my investigation over the past few days, their activities seem to have become more frequent, and they have established secret bases in multiple locations."

Ai Haibara analyzed, "This shows that their plan is accelerating, and we must find their core objective as soon as possible."

After a moment of contemplation, Conan said, "Based on our previous experience, they have been dedicated to researching viruses that control human minds. I suspect they may want to use this virus to achieve some kind of huge conspiracy."

Everyone nodded in agreement.

Ran Mouri said, "So where should we begin our investigation?"

Lin Yu pointed to several marks on the map: "These are the areas where they are most active. I think we can start from here."

Having decided on their direction, they began to prepare separately. Kogoro Mouri contacted the police, seeking support and intelligence sharing; Ran Mouri intensified her training to prepare for possible battles; Lin Yu continued to refine his technological equipment; Ai Haibara researched methods to combat the virus in the laboratory; and Conan constantly sorted through clues in his mind, trying to find the weaknesses of the "Shadow Alliance."

A few days later, they gathered together again.

Kogoro Mouri brought the latest news from the police: "The police have discovered some of the 'Shadow Alliance's' transportation routes, which may be related to their virus experiments."

Conan's eyes lit up: "This is an important clue. We can follow these transportation routes."

So they began their pursuit. Along the way, they carefully avoided the "Shadow Alliance's" spies, gradually approaching a stronghold hidden deep in the mountains.

The stronghold was surrounded by surveillance cameras and traps, and was heavily guarded.

Conan observed for a while and said, "We can't force our way in; we need to think of a way to sneak in."

Lin Yu took out a set of disguise equipment: "I modified these devices so that we can disguise ourselves as members of the 'Shadow Alliance'."

They changed into disguises and cautiously made their way towards the stronghold.

At the entrance, the guards questioned them.

Conan, with his excellent quick thinking, successfully answered the guard's question, and they entered the base smoothly.

Inside the base, busy figures and complex instruments were everywhere.

Conan and the others secretly split up to gather intelligence.

Ran Mouri discovered some documents about virus experiments in a room.

Lin Yu then found important video footage in the monitoring room.

Ai Haibara discovers some incomplete virus samples in the laboratory.

Conan found a map in an office that marked several important locations of the "Shadow Alliance".

Just as they were about to leave, an accident occurred.

A high-ranking member of the "Shadow Alliance" suddenly appeared and noticed Conan and the others' unusual behavior.

"Who are you people?" the higher-ups shouted.

Seeing that things were going badly, Conan and the others immediately took action.

A fierce battle broke out.

Ran Mouri engaged in close combat with the higher-ups, showcasing her karate skills to the fullest.

Lin Yu used technological equipment to interfere with and attack the enemy.

Ai Haibara then took the opportunity to destroy some important instruments and samples.

Conan, meanwhile, deals with the enemy while searching for an escape route.

In the chaos, they managed to shake off the enemy and escape the stronghold.

However, their actions have also raised the high alert of the "Shadow Alliance," and the challenges ahead will be even more daunting...

Once back in a safe place, they began to organize the intelligence they had gathered.

Ran Mouri looked at the documents and said, "Judging from these documents, their virus experiments are nearing completion."

Lin Yu played video footage: "And they seem to be preparing to release this virus on a large scale in the city."

Ai Haibara, holding the virus sample, said, "I need time to analyze this sample and see if I can find a way to crack it."

Conan looked at the map and said, "We must thwart their plans before they act."

In the days that followed, they worked day and night, preparing for the final battle.

Kogoro Mouri and the police devised a detailed arrest plan.

Ran Mouri constantly hones her fighting skills.

Lin Yu upgraded his technological equipment.

Ai Haibara is working hard in the laboratory to research a cure for the virus.

Conan, meanwhile, kept refining his battle plan, considering every possible scenario.

Finally, the moment of the decisive battle has arrived.

Conan and the others, together with the police, headed towards the headquarters of the "Shadow Alliance".

At headquarters, members of the "Shadow Alliance" were on high alert.

A thrilling battle is about to unfold...

Conan and his friends stormed into the headquarters and engaged in a fierce firefight with the enemy.

Kogoro Mouri led his police team and quickly took control of some key areas.

Ran Mouri displayed bravery in battle, defeating the enemy time and time again.

Lin Yu's technological equipment played a significant role, throwing the enemy into chaos.

Ai Haibara stayed in the rear, providing medical treatment to the wounded and assisting in analyzing the enemy's layout.

Conan, with his wisdom and courage, constantly seeks out the enemy's weaknesses and directs the course of the battle.

During the battle, the leader of the "Shadow Alliance" appeared.

He sneered, "Do you think you can defeat me like this?"

Conan remained unfazed: "Your scheme will not succeed!"

The two sides then engaged in a final showdown.

After a hard-fought battle, Conan and his friends finally defeated the leader of the "Shadow Alliance," destroyed their headquarters, and successfully prevented the release of the virus.

The city has returned to its former peace and tranquility.

Conan and his friends became heroes of the city, and their names were remembered by the people.

But they know that the path of upholding justice will never end; as long as evil exists, they will stand up...