"Eiga Precure Miracle Leap: Minna to Fushigi na 1-nichi" is a feature-length anime film set within the "Pretty Cure" franchise, celebrating the 15th anniversary of the series. The story unfolds as the Pretty Cure team, consisting of Cure Miracle, Cure Magical, Cure Yell, Cure Ange, and Cure Étoile, encounters a mysterious phenomenon that disrupts time and space. The film begins with the Cures preparing for a school festival, but their plans are interrupted when a strange girl named Liko appears, claiming to be from the future. Liko reveals that she has lost her memories and seeks the Cures' help to recover them.

As the Cures investigate, they discover that Liko's presence is tied to a distortion in time caused by a malevolent entity known as the Darknest. The Darknest seeks to erase the future by manipulating time, and Liko's memories hold the key to stopping it. The Cures embark on a journey through various time periods, encountering alternate versions of themselves and their allies. These temporal shifts challenge the team to adapt and work together, emphasizing their unity and determination.

Throughout the film, the Cures face numerous obstacles, including battles against the Darknest's minions, which test their abilities and resolve. The narrative explores themes of friendship, courage, and the importance of preserving memories. As the Cures piece together Liko's past, they uncover her connection to the Darknest and the pivotal role she plays in the timeline's restoration. The climax involves a high-stakes confrontation with the Darknest, where the Cures must harness their combined powers to protect the future and restore balance to time.

The film concludes with the Cures successfully defeating the Darknest and helping Liko regain her memories. Liko returns to her own time, and the Cures reflect on their adventure, reaffirming their commitment to safeguarding the world. The story emphasizes the enduring bonds between the Cures and their unwavering dedication to justice, encapsulating the core values of the "Pretty Cure" franchise.