The video shows a first-person view of a player in a video game. The player is holding a gun and is shooting at other characters in the game. The environment appears to be a modern building with stairs, hallways, and rooms. The player moves through the building, shooting at enemies as they encounter them. The game's graphics are realistic, with detailed textures and lighting effects. The player's gun is visible in the lower part of the screen, and the game's HUD (heads-up display) shows the player's health, ammo, and other game-related information.