The metro's rhythm sets the pace as the pair finds a secret corner, the woman's hand eagerly stroking the young man's cock while her other hand rubs her clit through her soaked panties. Their breathing syncs with the train's clattering arrival, each pause in the track's song allowing them to hear their own ragged breaths. She mounts him, her back against the wall, riding him with reckless abandon as the trains come and go, their lights casting fleeting glimpses of their entwined bodies, their moans swallowed by the metro's symphony.