The girls and gorillas at a singing telegram company are overworked because it is Valentine's Day. A series of sub-plots - a sexist disc jockey loses his dog and the girls fine it; one of the girls fights for custody of her child; an aspiring opera singer gets her chance to audition; and evil developer demolishes the telegram company's offices, etc, which all adds up to a large dose of confusion.
When Jo Tiegan is given an oval-shaped mirror, as a gift, by the elderly owner of an antique shop, she is amazed to see another girl's image in the mirror instead of her own reflection. It is also quite obvious that the other girl can see her just as clearly. Jo (from the 1990's) and 'the girl in the mirror', Louisa Iredale (from 1919), later accidently find that they can also travel to each other's times through the mirror - following upon which discovery a relentless sequence of events is set in motion.