In the 5th year of the new star calendar, an unknown deep-sea behemoth suddenly appeared. Humans at that time had no defense. The deep-sea behemoth looked at the unprepared humans and gradually came up with the idea of occupying the Cangshen Continent. Therefore, the war between humans and the behemoth began, and the protagonist was one of the soldiers who participated in the war. As the behemoth's attacks became more and more fierce, Human beings could no longer hold on. At this moment, a commander of Huiyue City named Duan Qi commanded the soldiers of Huiyue City to establish the first line of defense outside Huiyue City to resist the attack of the giant beasts, and then established a second line of defense in Fangzhang City. The second line of defense was made of the hardest material in the Cangcheng continent - meteorites. The second line of defense is also equipped with the Cangshen Continent's most powerful weapon - anti-matter turrets. Since human beings have limited matter, there is only one antimatter cannonball in the world.
Because the protagonist unfortunately died in a war, he was reborn as a deep sea monster and possessed a system, gradually becoming stronger with the power of the system.
The giant beasts are also divided into wild and giant beast corps led by the sky man-eating dragon. The wild giant beasts are ferocious and cruel and can only use brute force, while the giant beasts led by the sky man-eating dragon are well-trained and can fight like humans, but they cannot use human weapons.
And rejection is also divided into air force, navy and army. The behemoths that become the air force can fly and use long-range attacks, but are relatively brittle, while the behemoths that become the army cannot fly and can only fight on land in close combat, but their bodies are relatively hard and cannot fly. The behemoths that cannot land can only fight the human navy in the ocean.
Concept: Garbage system and host
