George Sunday lives in London with the love of his life, Nurse Janet Dawkins. Their busy lives are overshadowed by one unique yet significant element - George is Thermoman, a superhero. The humour and strains of their relationship (she doesn't understand that Thermoman's tights must not go in the washing machine; he doesn't realise that you don't French-kiss your girlfriend's mother - a light peck will do) make for captivating viewing.