Marin and her younger sister Urin are seafolk who happen upon something quite strange: a beautiful silver ring lost beneath the waves. The kind-hearted Marin, intent on returning it to its owner, drags a reluctant Urin along with her to the sky world despite reminders of a turtle elder who left for the surface and never returned. After locating the ring's owner, Kanon Miyamori, they learn that Kanon had tossed it into the sea after her boyfriend dumped her earlier that day. Though Marin insists that such a lovely item should not be thrown away, Kanon discards it once again. As they search for the ring, Urin becomes separated from the other two and accidently breaks the seal on a stone coffin, releasing an evil being known as Sedna. Sensing Sedna's release, the formerly missing turtle elder, Matsumoto, reveals himself to Kanon and her companions, naming Marin as the Priestess of the Sea. Together with the Priestess of the Sky, she has the power to seal Sedna away again. And as luck would have it, during an encounter with one of Sedna's minions, Kanon discovers that she is the Priestess of the Sky. Though Kanon is hesitant, she and Marin decide to work together to save the world from the evil that threatens it.

The Earth lies darkened and deserted. Despite the best efforts of the film's heroine, Hikaru, the evil-filled castle of Cephiro has taken over the world and stands in the center of a lifeless Tokyo. Before the ice-witch Alcyone can take her revenge on Hikaru, she is rescued by Lantis, a young man who seals her into a magical maze where she is challenged to prove her powers while her friends are hunted down by Cephiro's warlocks. Fleeing through the silent city, Umi and Fuu must seek out the sleeping Mashin; godlike creatures that will fuse with them to form giant warriors of awesome destructive power. But the Magic Knights are afraid, untrained and alone... will even the Mashin be enough to save them from the evil acts of Cephiro? (Source: AniDB)

Ever since she was young, Haruka Haruno has always aspired to become a princess. Despite being mocked for this seemingly childish wish, Haruka perseveres to make her dream a reality, ultimately culminating in her acceptance into the prestigious Noble Academy—the birthplace of people's fantasies. When Haruka arrives at her new school, a chance encounter with a pair of magical creatures influences a series of unbelievable events, and Haruka awakens as Cure Flora, the princess of blooming flowers. After two of Haruka's classmates also transform into legendary princesses, a story of self-discovery unfolds as the newfound team Princess Precure carries the responsibility of protecting everyone's dreams. Engaged in a battle between hope and despair, Haruka may find the key toward becoming the princess she has always dreamed to be.

In the continent of spooner, sorcerers, who are the continent's aristocrats, have begun to abuse their powers. Under the guidance of Big Momma (their boss) Carrot (who turns into a giant monster every time he's placed under a magic spell), Gateau (a bodybuilder), Marron (a mage), Chocolate and Tira (who can transform into dominatrix's at will) must stop the evil sorcerers from picking on the weak; however, none of them (except maybe Marron) have a clue to what's going on. (Source: ANN)