The video shows a crowd of people walking through a subway tunnel. The camera is positioned behind two men who are wearing shirts with university logos. The man on the left wears a pink shirt with the logo of the Universitat Politècnica de Catalunya-BarcelonaTech. The man on the right wears a black shirt with "Colombia" written on the back. Both men have earbuds in their ears. The tunnel is dimly lit with fluorescent lights. The crowd moves slowly and steadily forward.