The video shows a swimming competition taking place in an indoor pool. The swimmers are wearing swim caps and goggles, and they are swimming in a freestyle stroke. The pool is divided into several lanes by floating lane dividers, which are red and white in color. The swimmers are moving quickly through the water, with splashes visible as they breathe and turn their heads to the side. The background shows a banner with the text "GRAND PRIX SERIES," indicating that this is a professional swimming event.