Pretty Cure All Stars: Spring Carnival is the franchise's seventh crossover film in the series, released on March 14, 2015. The movie is in 3D. It is the first feature-length Pretty Cure film to feature extended dance scenes, similar to the 2011 short film Pretty Cure All Stars DX: 3D Theatre. Like the six previous films, the film will feature the characters from all Pretty Cure television series. In the story, the Pretty Cures visit Harmonia, the country of songs and dance. But when the unknown, sinister creatures invade and interrupt its tranquility, the Cures reunite to protect against the destruction.

With a "Mazui Bar" snack in hand, Choshi Electric Railway’s president, Kuramoto, comes up with a bold plan to save the nearly defunct railway, hosting a ghost train event that summons real spirits. But on the night of the event, only five participants show up. As the train enters the forest, real paranormal phenomena begin to unfold…