Why it worked
The video likely worked by leveraging the nostalgic appeal of Spongebob Squarepants to capture attention, then smoothly transitioning to a relevant product (live wallpapers) that aligns with the visual theme.
Summary
The video showcases a nighttime scene of the Krusty Krab from Spongebob Squarepants, transitioning to an advertisement for the "Wallpics" app, which offers live wallpapers. The app is presented with download links for Google Play and the App Store.