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

Mana receives a wedding dress previously worn by her mother and grandmother. A man named Matthew suddenly appears and brings her to a past world. She is happy to reunite with her grandmother and her dog Maro, but cannot find her friends Rikka and Alice. It seems her cherished memories have been altered. If this continues, the future may also be destroyed. The Precure girls must fight to protect their memories and future.