The video shows a first-person view of a video game where the player is holding a gun and walking through a castle-like structure. The player is moving around the area, looking for enemies to shoot. The environment is dark and gloomy, with stone walls and arches. The player's gun is visible in the bottom right corner of the screen, and there is a health bar at the bottom of the screen. The player is shooting at enemies, and there is a sound of gunfire and explosions.