What? A zombie as tall as buildings? Here, let me burn it. Ssss... The building-sized zombie burned in a fire which brightened the night. What? A monster as large as mountains? Here, let me kick it. Pak! The mountain-sized monster soared thousands of meters through the sky. ... As in the novel, the system suddenly appears along with zombies and monsters. People must kill zombies and monsters to level up and enter evolution. See how Yang Chen fights off zombies and monsters.