The video shows a first-person view of a player moving through a dark and damp tunnel. The player is armed with a gun and is looking for enemies. The tunnel is dimly lit with occasional light sources. The player moves cautiously, peeking around corners and looking for any signs of movement. Suddenly, the player spots an enemy and opens fire, successfully hitting the target. The enemy collapses to the ground, and the player continues to move through the tunnel, scanning the surroundings for any other threats.