Good footage of biplanes being prepared for a bombing attack and taking to the air.
Full titles read: "WAR IN THE AIR! - 300 Aeroplanes take part in great bombing attack and aerial defence of Empire's Capital."
M/S of pilots in flying gear looking at a map and talking. L/S of numerous biplanes taking off from an airfield.
Intertitle: "...the enemy's night bombers could each carry bombs weighing over 2,000 lbs."
M/S of two airmen standing beside a long line of bombs of three different sizes, set out beside a biplane. M/S of the aeroplane starting off for take off.
Intertitle reads: "Heard!"
M/S of three men standing at a kind of early radar contraption - one of the men looks through binoculars.
Intertitle reads: "Fighting 'planes instantly off to attack."
L/S of biplanes taking off.
Intertitle reads: "3 miles up over London."
Air to air shot of planes. M/S of a man looking through a kind of viewfinder / telescope from the ground. M/S of a searchlight swinging round. Very light / misty air to air shot of a plane. Night L/S of a plane coming in to land; only two lights are visible until it touches the ground.
More footage of bombs laid out and being loaded into the underside of a biplane. More shots of the airmen looking at a map. L/S of biplanes in the air. M/S of a man in flying gear trying out the movement of a machine gun attached to the rear seat of a biplane; another pilot sits in the front seat. Several shots of biplanes on the airfield, being prepared for flight; pilots climb into their seats in the planes. Remaining footage is similar to above.