The video shows a first-person view of a player in the game Minecraft. The player is standing on a platform made of white blocks, with a lava pit below. The player is holding a bucket and is seen placing white blocks on the edge of the lava pit. The player then places a purple block in the center of the lava pit and then removes it, causing the lava to spread out. The player repeats this process several times, placing and removing the purple block, causing the lava to spread out each time.