The video begins with a close-up shot of a muffin tin. A person is seen piping red batter into the tin, followed by orange, yellow, green, and blue batter, creating a rainbow pattern. The batter is piped in a circular motion, and the colors are layered on top of each other to create a rainbow effect. The person uses a piping bag to apply the batter, and the colors are vibrant and distinct. The video ends with the fully piped rainbow batter in the muffin tin.