1973 Caroline cannot wait to marry the love of her life, Ronald. What she doesn't expect is that Ronald has other ideas for the wedding, and Caroline will not be getting the happy ending she planned. 2023 Bryony and Oliver are planning their dream wedding at a beautful castle. When they visit the venue to view, Bryony feels something strange and leaves feeling different. Looking in the mirror, she discovers it's not her reflection. She has become possessed by the ghost of Caroline who is seeking the ultimate revenge. Can Bryony help this ghost move on, or will her wedding be destroyed?