this is what i make of the video. She's on drugs (G would probably explain her strange facial and body movements), and she runs out. She doesn't have any money, so she steals someone's bike to get into town, she then steals a buskers money then she goes buys the drugs off her DJ friend, takes the drugs, goes to the town nightclub where she realizes the person she stole the bike from and the busker are both friends with her DJ friend.
Then they kill her.