In the video, a person is seen rolling out a sheet of dough on a tray. The dough is then carefully folded over a red sauce that is spread on the tray. The person then rolls the dough over the sauce, sealing it in and creating a neat, rolled-up pastry. The tray is then placed in the oven to bake. The video is a step-by-step demonstration of how to make a pastry with a red sauce filling.