At the lab, Adam shows Danny the evidence they took from the scene. Sheldon tells Stella that the past bone fractures indicate the victims were most likely break dancers. Sheldon says they didn't find a bullet or an exit wound, but a metallic powder in the man's wound. Sheldon scans the metal and finds it consists of Zinc and Copper.

Stella reports to Mac that Brooke is recovering, but not yet conscious. Mac shows Stella a story about a past unsolved case involving the Compass Killer. Stella tells him to focus on the current murder. She says the victim, Jesse, performed last night. She explains that street dancing has gone pro. They watch a video where Jesse wins and is awarded $10,000. Another competitor pushed Jesse after he was declared the victor. Again they wonder why the killer left the money.

A group of men get in a circle and dance on stage. Mac and Flack enter the building and watch. They ask the second place winner, Dot Com, if they recognize the victim. They inform him they suspect him of killing Jesse. They notice that Dot Com is wearing a wrist band with a pattern similar to the wound found on Jesse's neck. Dot Com explains that Jesse stole his move. He confronted him and they got in a fight. They bring Dot Com to the station.

Stella meets with Brooke at the hospital. She asks her to ID the killer. Her friend, Nick, asks Stella if she has to talk to Brooke now. Stella asks if DC is the killer and bring him in her room. Dot Com orders Brooke to tell the police he didn't do it. Brooke says she doesn't remember.