In the video, a baby is seen playing with colorful blocks that have letters on them. The baby is wearing a diaper and is standing on a colorful rug. The baby picks up a block with the letter 'E' on it and places it on top of a stack of blocks that spell out the word 'BAA.' The baby then picks up a block with the letter 'F' on it and places it on top of the stack. The baby continues to play with the blocks, picking up and placing them on the stack. The baby's actions are playful and curious as they explore the blocks and their arrangement.