It is Summer of 1940. The evacuation of Dunkirk proves that the British can rise to a challenge, even under seemingly insurmountable odds. But now the soldiers, weary and defeated, wander the streets of Dover, conscious that over the channel and above them in the skies, the might of the German war machine comes ever closer. But life must go on and people must take comfort where they find it. TobyHendry, a fighter pilot, is awaiting orders when he meets Giselle, a young Frenchwoman who took the chance to flee occupied France with the English troops. Their love affair feels like a summer idyll, but can it withstand the forces of war? Meanwhile, reserve naval commander Paul Instow has been called up, to fight in a war for which he feels too old. Distracting him from his worries is Molly, a young Dover prostitute. Their relationship is tender and happy, but is this a love born from desperation or something more permanent? And then there are Harold, Spot and Boots, three boys desperate to fight the German invaders, armed only with catapults and a stolen bren gun... besieged Britain during these tense, but curiously elated days.