Collins steals some important documents from the crooked businessman-husband of Helena, and flees to the subway where he lives in the labyrinthine passages with various other outcasts. He has many adventures before meeting Helena again, including a beat-box competition, imprisonment in the canalisation, rainfall in the underground and a chess duel with the devil. When Helena turns away to leave him again – with the returned documents in her hands – Collins sticks a GPS-tracker on her handbag so he will find her on all dark paths where her husband might take her along.