Two young gentlemen living in 1890s England use the same pseudonym ('Ernest') on the sly, which is fine until they both fall in love with women using that name, which leads to a comedy of mistaken identities.
Eva, a young police department thefts of the Catalan police and eternal aspiring homicide department, is recruited to catch a serial murderer who is dedicated to killing older women. The young agent, single mother of a six year old, have to combine hunting the murderer with her maternal obligations.