In the video, a person is seen preparing a fish for cooking. The person is holding a lemon and a knife in their hands. They are standing in front of a stove where a pot is placed. The person then proceeds to cut the lemon into slices and squeeze the juice into a bowl. The person then takes the fish and rubs it with the lemon juice. The fish is then placed on the stove to cook. The person appears to be following a recipe to prepare the fish, and the video captures the process of marinating the fish with lemon juice before cooking it.