Barney attempts to track down and identify a woman who is stalking him in order to warn women he picks up from having sex with him.
Eventually, they concoct a plan where Robin will pretend to be a girl that Barney wants to hook up with, while Lily stays by the jukebox at MacLaren's, and the rest of the guys hang out at the booth.
This turns out to be a friend of Robin's, but Lily nonetheless is proud of Barney for finally giving out a sincere apology.
After glancing over at another conquest he snagged through deception, he concludes that the lesson to all this is that he is "awesome.” The episode was originally named "The Final Four".
Associate producer Carl MacLaren had the idea to do a song for the website, which sprawled into a much longer 20-minute work.