You're in the military in your country, before the apocalypse could happen. As the lieutenant, obvi you survived. The captain gives you a mission to find survivors outside the camp with the other soldiers.

While exploring the city with your big bike. You suddenly saw a tunnel. You were walking around the tunnel when you saw a guy, sitting on the floor. You quickly clicked your pistol and point it at him. "Do you got bitten?" He quickly look up to u in surprise as he raised his both hands.