Located in the outskirts of a certain city, an underground train that shows little difference from the ordinary tram in appearance is rumbling by in the dark tunnel.

But with the sudden harsh brake sound, it finally stopped on a simple platform located more than ten meters underground, not on the village in front or behind.

Before the train could stop, the only door except the front of the vehicle was opened, revealing several black gun barrels that had been aimed at the door.

After waiting quietly for a while, after confirming that there was no abnormality here, a strong man wearing a data-based helmet, a lightweight bulletproof vest, and carrying some "little props" on his face jumped off the train.

While landing on the ground and squatting down, the strong man turned around neatly and pointed the gun at the side that could not be taken care of at the car door: "Safe on the left!"

Another white man wearing the same equipment and with a small freckle on his face followed closely behind and jumped out of the train, maintaining the same alert posture, staring at the other side: "Safe on the right!"

In less than three seconds, everyone on the train had arrived on the platform and formed a tactical formation that could attack, retreat or defend, and leaned against the train without blind spots.

But this seems to be an unnecessary warning, because so far, not only has there been no abnormal situation, but no enemies have made a gorgeous appearance.

However, no one in this team let down his guard or complained. Because no one would know better than they who have been hovering on the line of life and death, and would relax their guard when performing tasks.

The bearded man who jumped out of the train first kept his muzzle facing away without turning his head at all, letting his eyes go away for a while, and said calmly: "You can say it now, Captain."

"Yes, captain, I've arrived at the mission location now." A burly black man, in addition to the same combat equipment as others, also brought a big package and said carelessly, "I'll say it early and finish it early. I'll have to go back to take care of Little Isalie. It's always unsafe to hand it over to the nanny."

Beside him, the white man with little freckles smiled and said, "You are such a good father, a big man."

Others also clamored and said, "That's right, after Little Isalie was born, the big man kept his daughter away from him, a standard good father."

At this time, the middle-aged white man who was surrounded in the middle of the formation had a terrifying scar on his face. It seemed that the captain of the team said, "Okay, you can just joke when you go back. Now everyone will listen to me quietly. The core goal of our mission this time can be simply summarized as: bringing back the central computer motherboard of this laboratory. The above needs to know what happened here, which led to the severance of all contact with the outside world, including what happened to the escort team who disappeared yesterday."

"In addition, we also need to conduct a preliminary investigation here - as long as you drive around with your cameras - and save the survivors as much as possible. I don't want to go to the center of the trap without knowing anything."

"By the way, if you can do it, no, as long as you are still here, we must bring back the samples and data of a certain experiment. After all, the above seems to value such experimental samples very much."

"Also, although it doesn't seem to be fighting with our 'old partners' this time, you should be clear about the reasons why you, as the most elite mercenary troops, will appear here. Whenever you are, don't let your guard down!"

"Yes! Captain!"

Then, the captain seemed not to waste time and immediately ordered: "The specific tasks and briefings, and all relevant information, including maps, have been transferred to the PDA of all of you. From now on, according to the alpha plan, everyone will be divided into two teams. Team A will go to the main room to obtain the computer motherboard, and Team B will go to the vault to obtain experimental samples and data, and search the interior of this laboratory as much as possible on the way forward."

Everyone took out the PDA on their chest with one hand and confirmed: "Understand! Captain!"

The middle-aged white man waved his hand and walked towards the iron gate at the exit of the platform: "Then, go!"

The others followed the captain, stood up and took steps, and the gun was always aimed at their front. They were as they should have been, and they naturally divided into two teams without communication.

However, although no one has relaxed his vigilance, it can be seen from the team's radio channel that the team's mental state is relatively relaxed - being too tense will only lead to the worst results:

"Speaking of this mission is over, where do you plan to go on vacation?"

"Marubin, I heard that the headquarters recently bought a beach there."

"It sounds good, so let's go together next time. Remember to say it to the top, captain."

The white captain knew clearly the temperament and abilities of his subordinates, so he did not restrain them too much. Instead, he also laughed and scolded on the radio channel: "What a group of unsatisfied greedy little boys. Don't worry, I will tell them when I go back this time."

"Thank you, Captain!"

But after walking down several levels, everyone's nerves had to be completely tense. Because everyone saw a lot of blood on the roads and walls, as well as corpses with strange wounds everywhere, and murder scenes that seemed to be killing each other.

It seems that something has indeed happened here.

However, it seems that no one here has come to tell them what happened here again. Because so far, the team has searched through every corner and found no survivors or clues related to this.

until--

"This is Team A. I have arrived outside the computer room. The highest permission program on the PDA cannot open the computer room door. The big man is working hard. But it seems that it will take a lot of time. What about your situation?"

"This is Team B, and I have arrived at the warehouse. I am accessing the program. Oh, the light has turned green. It seems... wait, why is this door still not moving!... Bang! Damn, the door of the warehouse looks completely locked. We need a set of breaking tools. The guys on hand can't open this damn door at all."

"Team B, according to the information, the G warehouse of this laboratory seems to store dangerous items related to the explosion. I think you can go and take a look."

"Explosion? Well, Team A, if there is really no way, we will go and have a look. Not bringing nitroglycerin with us this time is a big mistake. I hope we won't bury ourselves here."

"Team B, I wish you all the best. Oh, the big guy has opened the door. It seems that we can now complete a goal. After the motherboard is recycled, we will go and help you."

"Okay, Team A, we're now going to find a scoring tool."

"Let's understand, start recycling the motherboard...Shet!!! I...ah!!!"

"Team A! Griguli?! What's wrong with you? What happened to you?! Team A! Reply!"

"...Griguli is dead. Located inside the computer room, there is also an independent laser trap that is not recorded in the intelligence and seems to be still in the startup state. Sorry, this is all my mistakes and responsibilities..."

"It makes no sense to discuss responsibility now, mathematician, can you turn off that damn trap!"

"No problem, captain!"

Just when everyone began to feel uneasy because the first victim appeared and their hearts were filled with ominous clouds, they did not know the future or end of the situation they were about to face.

"Team B, the motherboard has been obtained, we'll help you... Hey, who is shooting me? Ahhhhh!!"

"Team A! Team A!! What happened? What happened to you? What happened to the trigger?! Damn! Bang! Hum? This door wasn't before..."

"... Team B! The trigger has been killed! The trigger has been killed! It's Zombie! It's Zombie!! It's over here, evacuate immediately! Evacuate immediately! Quickly, shoot quickly! Don't let them get close!"

"Team A! The typewriter is dead! It is evacuating! It is evacuating! Damn, give me another grenade! Go to death, the residue! Boom!..."

"God bless you! I hope we, no, we will definitely go back alive!!!"

It is completely different from the monster roar that humans can make, the sound of gunfire that does not stop like a sonata, and the explosions that sound from time to time, a grand musical opera about humans, monsters, life and death that is being staged.

Half an hour later, this mysterious facility located underground returned to the silence of death.

On the platform, the iron door leading to the interior was opened again, and a strong figure staggered out. After insisting on walking forward for a few steps, he seemed to have consumed the last little power. He fell on the ground in a staggering and then never got up with his own strength.

At this moment, the train that was originally stuck on the track, in the blink of an eye, was not so much a new skin, but rather a new one, and all of them had earth-shaking changes, including the size and number of cars.

However, the train beside the platform is no longer the dilapidated and shabby backward train.

The next moment, the train door opened to both sides, and a "girl" wearing a high school uniform similar to a high school uniform walked out of the door with a calm expression:
Chapter completed!