The moment the door was pushed open, Conan and the others tensed up, ready to fight at any moment. However, what appeared before them was an unfamiliar face.

"Don't be nervous, I'm not an enemy," the newcomer said, raising his hands.

Conan scrutinized him closely. He noticed that the man was wearing a worn-out jacket and had messy hair, but his eyes revealed sincerity.

"Who are you? Why are you here?" Conan asked warily.

The man took a deep breath and said, "My name is Kimura, and I've been secretly investigating this organization. I discovered your actions, so I followed you."

Lin Yu asked skeptically, "Why should we believe you?"

Kimura took a document out of his pocket: "This is some evidence I've collected about this organization, which may prove my identity."

Conan took the document and examined it with his friends. The contents of the document did indeed match the information they possessed.

“Okay, I’ll believe you for now. But why are you investigating this organization?” Conan asked.

Kimura clenched his fists, a flash of anger in his eyes: "They killed my family, and I swear I will make them pay."

Ran Mouri looked at him sympathetically: "I see. Then let's fight them together."

Ai Haibara said, "But we are in a dangerous situation right now, and we must find a way to get back to the energy core."

Kimura thought for a moment and said, "I know a secret passage that can bypass enemy patrols."

The group decided to follow Kimura to the secret passage.

Along the way, they carefully avoided enemy sentries.

"We're almost there, just ahead," Kimura said, pointing to a manhole cover not far away.

They opened the manhole cover and went down the passage.

The corridor was filled with a damp smell, and water droplets from the walls dripped onto their shoulders.

"Everyone be careful," Kimura warned.

Suddenly, a deep roar came from ahead.

"What is it?" Nightshade asked nervously.

Kimura's expression changed: "This is bad, it's a guardian beast raised by the organization."

A huge mechanical monster appeared before them, baring its fangs and claws as it lunged at them.

"Everyone, scatter!" Conan shouted.

Ran Mouri charged forward without fear, using karate to attack the monster, but the monster's shell was incredibly hard, and her attacks had no effect.

Lin Yu used high-tech weapons to shoot at the monster, but the monster was extremely fast and easily evaded the attacks.

Conan observed the monster's movement patterns and discovered its weakness was in its abdomen.

"Attack its belly!" Conan shouted.

The group focused their fire on the monster's abdomen, and the monster finally collapsed to the ground.

"Let's go!" Kimura said.

They continued onward and finally arrived near the energy core.

“Look, that’s the energy core,” Kimura said, pointing ahead.

A group of enemies were seen busily operating instruments, seemingly preparing to activate some device.

"We can't let them succeed!" Conan said.

They quietly approached the enemy, preparing to launch a surprise attack.

"Go!" Conan gave the order, and the group pounced on the enemy like tigers.

Another fierce battle broke out.

Conan uses his intelligence to cleverly devise tactics that throw the enemy into chaos.

Ran Mouri's karate is incredibly powerful; every strike can defeat an enemy.

Lin Yu's high-tech weapons played a significant role, inflicting heavy losses on the enemy.

Nightshade, with his agile skills, weaves among the enemies, delivering a fatal blow.

Ai Haibara provides support from the rear, ensuring their safety.

Kimura also did not back down and fought a desperate battle with the enemy.

Through their joint efforts, the enemy was gradually eliminated.

"We've finally got the situation under control," Lin Yu said, panting heavily.

However, just when they thought victory was in sight, the energy core device suddenly emitted a bright light...