Dokidoki! Precure: Mana Kekkon!!? Mirai ni Tsunagu Kibou no Dress

Mana is given a wedding dress which was worn by her mother and grandmother. All of sudden a mysterious man named Matthew appears and takes her to the past world. Mana is so glad to meet her grandmother and her beloved dog Maro that she had a long time ago, but she can't find two of her best friends Rikka and Alice. It looks her precious memories have been changed somehow. If things continue as …