The video features a group of animated pigs, including a large pink pig, a smaller pink pig, a white pig, and a pink pig with glasses. They are gathered in a room with a green wall and a purple couch. The large pink pig is holding a birthday cake with lit candles. The smaller pigs are singing "Happy Birthday" and blowing out the candles. The room is decorated with colorful balloons and streamers. The video is bright and cheerful, with the pigs displaying happy expressions.