Royal Navy ships fend off enemy aircraft attack to let convoy of merchant ships get through.
Title reads: "Navy repels attack on convoy".
Somewhere in Mediterranean.
Various shots convoy of merchant ships with Royal Navy ships as escorts. Various shots of lookouts on warships looking through binoculars. An enemy aircraft is sighted by the lookouts and sailors of the "Renown" and the "Ark Royal" go into action. Various shots of warships firing antiaircraft guns into air. One of the enemy aeroplanes crashes into the sea. More shots of men on warships loading and firing guns. More L/Ss of convoy.