So everyone though how GOTTA BE YOU didn't have a story plot? Well I saw a comment and though it match the video really much. 

So how the four girls all walked through the maze, I though well maybe the guy is playing with all four of them. Telling them all lies and stuff. How he watch them through the binoculars to see which one to get to him first since they are slowly walking forward. And how at the end CL showed up, I guess she got their first so she got him and the other three girls are still finding their way out of his maze?! Maybe, that what the comment said and it kindof made sense to me..