I'm taking back my previous post. I think that this video has nothing to do with the actual song. I think it's about him making a come back
1st scene: him walking alone, looking for himself and attempting to come back
2nd scene: the girl, is like the symbol of his carreer, he eventually manage to find her and to dance with her, even if she was too high to be reachable
3rd scene: After eventually finding the girl who symbolize his carreer he is back on stage again
4th scene: He is finally in the spotlight, and messing with the audience, he is loved by his fans and successful agin
The concept is actually good, but Usher and his team need to get it together, if they wanna do subliminal things they need to get out of their ivory tower and explain their idea to the fans, just like Lady Gaga and her team are doin, otherwise nobody will get the real meaning of the video and will call it basic.