Holborn tube station 1977, a fish called 'Creasy' lives in the cistern of the men's room. He's a key player in London's underworld. His nemesis Ratty from Spitalfields is gaining power. Ratty's money launderer disappears, all animal appendages' point to Creasy.

It's war on the Thames.

Punk is here, and punkfish rule the waterways of London. Coked-up eels, a lion finds his purpose, and a fish improves his art collection.