The video likely worked due to its relatable and humorous content, showing a common activity (making a TikTok) with a playful interaction between the participants. The use of trending sounds or effects, common on TikTok, would also contribute to its reach.
Summary
A group of people are shown attempting to create a TikTok video. One person guides another through the process of selecting a sound, choosing a clip, and recording a new video. The video ends with the group looking at the finished product.