Upper-class scoundrel Basil Seal, mad, bad and dangerous to know, creates havoc wherever he goes, much to the despair of the three women in his life - his sister, mother and mistress. And when Neville Chamberlain declares war on Germany, it seems the perfect opportunity for more action and adventure. So Basil follows the call to arms and goes forth to have his finest hour - as a war hero. His instincts for self-preservation come to the fore in such spheres of opportunity as the Ministry of Information and a little-known section of Military Security. But, with Europe frozen in the 'phoney war', when will Basil's big chance to fight finally arrive?