The video shows a first-person view of a player in a Minecraft game. The player is standing on a cliff overlooking a large body of water. The player then jumps off the cliff and begins to swim underwater. As the player swims, they come across a large school of fish swimming together in a group. The player then throws a cobblestone block into the water, which creates a small island. The player then swims towards the island and places another cobblestone block on top of it. The video ends with the player looking at the newly created island.