In 2025, a pitch-black crack suddenly opened in the dome, and a large amount of dark red liquid gushed out of the crack and covered the earth.

The thick, dark red liquid was like a plague, and everywhere it passed, the bodies of all living creatures began to undergo drastic changes.

The cows in the fields swelled several times in size and grew dark golden horns on their heads, the fangs of the rats in the sewers pierced their jaws and sharpened stones like mud, and the birds in the sky protruded barbs from their spines and expanded their bodies a hundredfold...... Even humans, impregnated with a dark red liquid, have lost their minds and become bloodthirsty monsters who only know how to kill.

After the dark red liquid sloped down from the crack, the crack shook several times before it began to expand. This time. The dark red liquid didn't flow out again, and out of the cracks were monsters that resembled humanoids, purple skin covered with outer armor, and hideous faces!

Purple monsters came out of the cracks one after another, group after group, and they began to order the mutated creatures on the earth to start planning to cleanse the world, and began to kill human beings endlessly! Feed on human flesh and blood! Their physical fitness far surpassed that of human beings, and even with thermal weapons, human beings were still cleansed by their almost slaughter, and most of the nearly 10 billion people were wiped out in a few days.

This day is called a "calamity" by mankind. It is also from this day that the rulers of the earth are no longer humans, but this group of unknown and mysterious new "visitors", known by humans as "xenomorphs".

After the "xenomorphs" ruled the earth for nearly a hundred years, human beings finally developed effective weapons against xenos in hiding and counterattacking again and again, and one after another humans whose physical qualities were comparable to xenomorphs were born, and humans officially launched a counterattack war against xenomorphs.

However, the xenomorphs are far more powerful than human beings imagine, and in the wars one after another, the xenos encountered by people are getting stronger and stronger, and the humans who originally thought they could successfully eliminate the xenomorphs had to change their plans, give up the idea of eliminating all xenomorphs, and began to build human cities, recuperate, and develop more powerful weapons to strike at xenomorphs.

Year 2216

City No. 13

"Brother Yu, are you really going to go to the outskirts of the city? Don't go to death! We are all ordinary people! Once we get out of the city, those mutated creatures outside, the whole hare can kill us! Don't go!" A little fat man with a round head and round head said anxiously to the black-haired young man who was packing his luggage in front of him.

"It's okay, I'm not going alone, this time there is a C-level mutant with me, as long as I don't encounter xenomorphs or beast tides, there won't be much danger." Even if it's dangerous...... You know, I really need this opportunity. “

"Don't really go! You don't know, the heterogeneous content in our body is too low, even if you go out of the city, it is possible to increase the heterogeneous blood content due to the alien blood pollution outside the city, but then you have to have a life to increase it, there are so many dangers outside! And how can the promotion of alien blood be so simple, if you don't pay attention, you will become a bloodthirsty! Then how can you go to your parents!"

Wu Yu didn't take care of the little fat man, and continued to pack his luggage for going out this time.

It is indeed dangerous outside the city, but if he does not go, Wu Yu will not have the opportunity to retest the content of the heterogeneous blood, nor will he have the opportunity to inject artificial heterogeneous blood.

People who have been impregnated with foreign blood, but who do not have a mental abnormality, should have a blood test at the age of 15.

Anyone with more than 10% heterogeneous blood content can enter the Heteroblood Warrior Academy for formal combat training, becoming a real "arbiter" who can compete with xenomorphs.

And the content of heterogeneous blood is too small for less than 10% to awaken the power in heterogeneous, so they can only live as ordinary people, or go to join the army.

And Wu Yu and the little fat man in front of him, Shen Heng, were detected when they were 15 years old, and the heterogeneous blood content in their bodies was only 3% and the other was only 7%, and they did not have the possibility of entering the Heterogeneous Warrior Academy.

Wu Yu doesn't care much about this matter, whether he lives as a so-called arbiter or just as an ordinary person, he doesn't have much pursuit, in this world, it's very good to survive.

However, just a few days ago, Wu Yu just received the news that a pair of middle-aged men and women appeared in H City, the territory of the different species, and this pair of men and women was likely to be his parents!

Wu Yu's heart was extremely shocked, since he was sensible, he had been taking care of himself as the mayor of the town, and he had never had the impression of his parents in his mind.

The mayor never told him about his parents, and every time he asked him about his parents, the mayor was either silent or changed the subject.

Wu Yu even thought that his parents were dead for a while, after all, in this world, death is more common than survival.

And when he heard the news of his parents, Wu Yu couldn't ignore this matter anymore. He wanted to see his parents, he wanted to know why his parents hadn't come to him for so many years, why they had left him in the first place!

However, his parents are in the distant city of H, and if they want to go there, even the arbiters are dead, and there are many crises on the road, even if they survive and reach H city, there is a real hell, where countless xenomorphs gather, powerful and tyrannical, and some arbiters are as weak as ants in their eyes, and they can pinch to death with their fingers. With a weak ordinary person like Wu Yu, let alone there, there may be no bones left just by walking a few miles out of the city!

So, he had to make himself stronger, either to become an arbiter, or to inject artificial alien blood and become a modified human.

Ordinary people who have been judged to have a heterogeneous blood content of less than 10% are only qualified to have their heterogeneous content measured again after surviving in the areas that have not been purified and have not lost their minds after entering the periphery of the city.

But generally speaking, no one dares to go out of the city gate without authorization, once ordinary people come into contact with the polluted air outside, the heterogeneous blood content in the body will soar rapidly, and it may be that in the blink of an eye, the heterogeneous blood content will exceed 80%, at this time, people will lose their minds and become monsters of the walking dead, commonly known as "bloodthirsty".

Therefore, ordinary people generally need to be followed by an arbiter when they go out of the city gate, and the arbiter has a small purifier on his body to prevent him from mutating into a bloodthirsty person because of the polluted air.

This mission, just an exploratory mission, the periphery of the 13th city has recently appeared some unusual mutant creatures, and the types of mutated creatures seen on weekdays are different, which means that the new mutant creatures may be migrating to the periphery of the 13th city, you must check whether it is an unintentional few, or there are traces of migration, in order to prevent in advance.

It stands to reason that ordinary people have no way to join this kind of task, and only those who have a comprehensive strength assessment of D or above are eligible to join, and those who can have a comprehensive strength assessment, the most basic condition must be an arbiter, or a student of the Alien Blood Warrior Academy.

But Wu Yu's stubborn and stubborn determination made the mayor compromise, and through the relationship, he opened a back door for Wu Yu to join the mission. Once this task is completed, Wu Yu can get a chance to re-measure the content of the alien blood, if there is still no way to enter the alien warrior academy, then inject artificial alien blood and become a reformed person! No matter what, he must go to H City to find his parents!

No matter how Shen Heng persuaded Wu Yu, he saw that he couldn't listen, so he was a little helpless, sat on the ground and sighed.

"Well, you said that if you go away like this, what if you die...... I'm just a friend like you, the mayor looks like a fifty or sixty person, and he doesn't have a wife, let alone children, and you are the only one up and down, and you say that you want to leave like this, and that old man doesn't look like he has a second spring, so isn't he going to become an empty nester...... Oh my God, the mayor is so pathetic...... Although you are not his own grandson, he has long regarded you as his own grandson! Are you trying to make him a lonely old man at a young age?"

“......”

"Alas, miserable, miserable, miserable. ”

"I said, can you not be yin and yang? I'm not dead, you're just crying and mourning, can you hope that I'll order something good? I'll go out like this, and I'll be followed by a C-level arbiter, to put it bluntly, I'm a bastard, I'll go to lie down on a mission! Come back after lying down and prostitute for nothing, how can there be so many scenes!" Wu Yu looked at the little fat man who was crying and making trouble on the ground, and he was stunned and wanted to rush up and give him a kick!

"However, it is very dangerous to go out of the city! It is said that few of the people who went out came back intact!"

"Have you ever been out?"

"Nope. “

"Then you're worried about! That old man in my family isn't worried about me! What do you have to worry about!"

When Shen Heng heard it, it was also true that if there was really any big danger, the mayor would not let Wu Yu go into danger, after all, he really regarded Wu Yu as his own grandson.

Seeing that Shen Heng was not dissuading, Wu Yu did not pay attention to him.

There was a long silence

Shen Heng suddenly asked, "Brother Yu, if you can't be an arbiter in the end, and you can't be a reformer, do you still want to go to your parents." “

Wu Yu thought for a moment

"Yes"

"If we can't do that, let's go to the army. If we join the army, one day we will have a chance to find our uncles and aunts. “

"We?"

"Yes, we! I'll go with you to find it!"

Wu Yu looked at the round little fat man in front of him with some surprise.

I met Shen Heng when I beat Xiao Wu Yu, Shen Heng was very timid, he was bullied since he was a child, and he didn't dare to resist, he has been hiding behind Wu Yu since he was a child, being a little follower. Since I was a child, I was also round, and because I was afraid of exercising, the meat on my body never decreased. Such a person actually said from his mouth that he wanted to join the army.

"Joining the army is hard. “

"Hmmm......"

"Joining the army on the battlefield has a very high mortality rate, and the injury rate is also very high, aren't you afraid of pain? Aren't you afraid of death? Ordinary people go to the battlefield and say that they are cannon fodder, are you sure?"

The little fat man was a little distracted, swaying, his little face was red, and finally it was as if he had made a decision!

"Yes, that's right! I'm going to join the army!"

"Why?"

The little fat man stood up and straightened his chest: "Because I want to be a warrior! Defend the family and the country! Protect the peace of mankind and drive out the alien species that bring blood and disaster! Kill them all! For the sake of a peaceful future!"

Wu Yu looked at Shen Heng with some surprise, and couldn't help but laugh out loud

"I didn't expect you to have such lofty ideals! Okay, then I wish you to realize your ideals as soon as possible! Make outstanding contributions to mankind!" Wu Yu imitated Shen Heng's appearance and pretended to shout slogans.

Shen Heng said angrily: "What's so funny!"

Wu Yu didn't make fun of him, packed his luggage, said goodbye to Shen Heng, and went to the mayor's house.

Shen Heng looked at Wu Yu, who was gradually walking away, and muttered in his mouth

"Because you have always stood in front of me to protect me, even if it is only once, I also want to stand in front of you to protect you when you can't......"