In the video, a person is seen assembling a keyboard. The keyboard has red keys and black bottoms. The person starts by picking up a black bottom and placing it on the keyboard. They continue to do this until all the black bottoms are attached to the keyboard. The person then proceeds to pick up a red key and attach it to the keyboard. They repeat this process until all the red keys are attached to the keyboard. The person then tests the keyboard by pressing the keys. The video ends with the person showing the finished keyboard.