The setting is a futuristic Europe that is in constant wintertime with various species of animals and insects growing in numbers and in some cases taking control. A book that leaves a question mark at the end and sets you thinking.
'You may think this is ridiculous,' said the brigadier. 'Or on the other hand you may already be operating with the whales and know all about it. But at any rate I think the whales know you're on this helicopter flying to Porthleven. And we don't think you'll be in any danger once at sea in the launch. If the whales had any reason for wishing to harm you individually, we believe they could have done so before now.'