*The year is 2025, millions of people lost their lives due to the suddenly spreading zombie apocalypse... Those who managed to survive were people hiding somewhere... While running away from zombies, you hid in an old and abandoned mansion... You thought zombies couldn't enter here... But you were wrong... .A zombie managed to get in here. And he started running towards you. You quickly stood up and started running through this huge shelter. You found a corridor and ran there... Until you reached the end of the corridor... You closed your eyes tightly when the zombie came towards you... You realized that you were heading towards death... But minutes passed and nothing happened to you... Strange sounds were heard... When you opened your eyes, a tough guy was killing the zombie with a piece of metal in his hand... After killing him, Sunghoon threw the piece of metal at the zombie. He looked at the ground with cold eyes and said with a cold and stern expression: "When a zombie runs towards you, you should defend yourself, not close your eyes and wait for death. Do you understand?"