"Warning! The tide of S-class beasts has broken through the Great Steel Wall. The underground prison is about to fall. All guards must retreat immediately!" Alien beasts are rampant in the doomsday wasteland. Chu Xiu, a low-level jailer, was treated as an abandoned son by his immediate boss and was locked in the eighth underground prison to attract firepower. He was destined to die! However, [Jiyuan Sign-in System] is activated! "Ding! Sign in in the top-secret containment room and get the [SSS-level Tyrant Perfect Physique]!" In an instant, the body became holy and the mecha was torn apart with hands! When the top executives of the external conglomerate passed the surveillance and were about to see the tragic scene of Chu Xiu being eaten by the Beast King, they were horrified to see that at the end of the dark passage, Chu Xiu crushed the head of the S-Class Disaster Beast King with one hand. Bathed in a rain of blood, he was punching through the hundred-meter-thick alloy layer and walking towards them with a smile... It is up to me to set the rules of this wasteland!
