When Catherine visits the Constantines at Treworgey, her stay is longer than she anticipated. She becomes involved in the lives of Aunt Ada, Mimsy and Uncle Lando, and doesn't want to leave. She agrees to a 'marriage of convenience' to the head of the family, Edward, intending to earn her place in the household. But when Paula Penlove returns to the neighbouring estate, she realizes that she loves her 'husband' - but is it too late to tell him so...?