O lordy

A man in a light-colored coat walks forward in a dimly lit, arched corridor, then the scene cuts to a close-up of a young man with red hair and sunglasses who reacts with surprise, his mouth open, as he appears in a smaller inset frame; the sequence loops, alternating between the man walking and the young man's reaction, with the inset frame of the young man appearing in the corner of the wider shot.