Tracing the truth of the doomsday and exploring the rules of survival in a crisis world. With the sudden sound of an alarm, accompanied by the noise of the crowd and the roar of the infected, the painful screams were like the sound of a death knell, announcing the arrival of the doomsday. Some people had no time to escape and were instantly swallowed up by the flood of corpses. Some people boarded the last train out of the city and headed further and further into the unknown direction. Unfortunately you were unable to drive far, but fortunately you managed to escape before the entire city was flooded. The crisis does not end here. What awaits you are not only infected people who may appear behind you at any time, but also countless tests of humanity. Resources, rights, territory, hatred... Even on the eve of their demise, the survivors are still fighting. How would you choose? Whether to open the map and walk around every corner, holding on to scraps to survive; or to gather other survivors, pick up weapons, and look for life in a desperate situation; or to follow traces of clues, find legendary refuges, and discover the last vestiges of civilization. Line of defense... This doomsday journey has just begun...