London 1862, and Millicent Aberly, spinster by choice, has found her future love-in the future! She meddled with her brother's time machine and has been catapulted into an alternative world where the Roman Empire has neither declined nor fell. In fact, it has gone on to annex most of the known universe. Millicent is rescued from Rome's greatest enemy, the giant space squid, by Sangfroid, a tough and wily centurion who, unfortunately, dies while protecting her. Wracked by guilt and a peculiar fascination for the woman soldier, Millicent is determined to return in time and save Sangfroid from her fatal heroics. Instead, she finds her sexy centurion in her own timeline. And Sangfroid is not alone; several stowaways have come along with her. Soon Millicent's mews house is overrun with Roman space warriors and giant squid.