The video begins with a close-up shot of a person's hands holding a smartphone. The person is scrolling through the phone's home screen, which displays various app icons. The person then selects an app called "Desktop Visualizer" and opens it. The app's interface appears on the screen, and the person navigates through it, selecting different options. The person then demonstrates how to use the app by creating a desktop background. The video ends with the person showing the final result on the phone's screen.