In the video, a baby is sitting on the stairs and then stands up. The baby is wearing a colorful shirt and blue jeans. The baby is holding a pink toy and has a pacifier in its mouth. The stairs are carpeted and there is a wooden railing on the side. The baby looks around and then starts to walk down the stairs. The baby takes careful steps and holds onto the railing for support. The baby's movements are slow and deliberate as it navigates the stairs. The baby reaches the bottom of the stairs and looks around. The video captures the baby's first steps and the excitement of exploring a new environment.