Various shots of lighthouse lantern flashing, turning, of lighthouse and adjoining house. MS of captain at railing of ship, reading dial of instrument. MS from bow of boat approaching beach, wooden houses along shore. PAN from boy to men unloading supplies from two small boats on beach. LSs of river, PANs to lighthouse on rocky cliff. LAMLS of lighthouse. Shot of two men in boat alongside ship. HAMS of radio operator at work, CU of hand tapping morse key. Side shot of officer and sailor walking along gangplank, boarding ship. MS of group discussing around table in house, lantern in middle of table. MS of woman watching turning wheels of machine inside lighthouse building. Night MS of lighthouse and house silhouetted against sky. Shots of window outside house, radio operator working inside, rain and lightning flashing, night. Interior HAMS of radio operator at work.