Mana receives a special wedding gown passed down from her mother and grandmother, but her joy is interrupted by the sudden arrival of a mysterious man, Matthew, who transports her to the past. Reunited with her grandmother and cherished dog Maro from long ago, Mana discovers that her friends Rikka and Alice are missing. As she realizes her precious memories have been altered, she fears for the impending ruin of the future. Now, the Precure girls must battle to safeguard their memories and secure the future ahead.