unexpectedly

A man in a white sailor's uniform and cap stands in a narrow, metallic corridor, looking through a circular porthole. He turns his head, then leans in to peer through the window, his face suddenly covered in white foam as he recoils in shock. The scene cuts to a woman in a blue patterned dress on all fours on a bed, then returns to the sailor, now with foam smeared across his face and hair, looking dazed and confused while holding the porthole. The setting is a ship's interior with white walls and a small window.