The video shows a person holding a knife and a power tool with a grinding disc attached to it. The person is in a kitchen, and they are using the grinding disc to sharpen the knife. The knife is held at an angle to the disc, and the disc is spinning at a high speed. The person is carefully moving the knife across the disc, sharpening the blade. The kitchen appears to be a domestic setting, with cabinets, a stove, and a sink visible in the background.