When mysterious creatures known as Damedame begin causing trouble, young detective Anna and her friends are called upon to investigate a strange new phenomenon: valuable objects marked with an X suddenly stop working. Their investigation takes an unexpected turn when a fairy named Rain asks them to protect a girl named Karin from the Damedame. Rain leads the detectives to Karin’s beautiful, dreamlike garden, where they meet Karin and Alan, a fairy who watches over her. As Anna and her friends grow closer to Karin and begin uncovering the garden’s secrets, the Damedame suddenly appear there as well. What are the mysterious Damedame, and what secret lies hidden within Karin’s garden?

Kuroe Akaishi just wants a normal high school life—but that's impossible with a rare condition that turns her into a giant kaiju whenever her emotions spike! Things get even worse when she falls for Arata Minami, the most popular boy in class. Now every blush, heartbeat, and crush could trigger a monster transformation. Can Kuroe survive high school love before it destroys everything around her?!

On her 14th birthday, Anna Akechi meets a magical fairy and suddenly time-slips from 2027 to 1999! There, she befriends Mikuru, a spirited girl who dreams of becoming a detective. When mysterious thefts stir rumors of the Phantom Thieves, the two transform into Detective Precure, using courage, deduction, and friendship to solve cases and uncover the secret of Anna's journey through time.