Happiness Charge PreCure!

Fearing she might lose to the Saiark yet again, Hime decides to escape with Megumi to her hideout. There, Blue explains how the Phantom Empire emerged from a sealed box known as Axia and began plaguing the world with Saiark, including Hime's homeland, the Blue Sky Kingdom. Hime, feeling she has no chance of winning against the Saiark and is a failure as a Pretty Cure, runs off, prompting Megumi and Ribbon to chase after her. Using special items called PreCards to don a magical detective outfit, Megumi, aided by her friend Yuko Omori who had ran into Hime earlier, manages to find Hime and give her some encouragement.

Blue gives Megumi and Hime some Cure Line phones, so they can keep in contact with each other, before urging them to keep their identites as Pretty Cures a secret from their friends and families. However, Megumi has a hard time keeping things a secret from Seiji, who lives next door to her. The next day, during his morning run, Seiji encounters a Newspaper Saiark being led by another one of Queen Mirage's commanders, Hoshiiwa. Arriving on the scene to find Seiji beating up by the Choiark, Megumi and Hime choose to transform in front of him to protect him. After Megumi beats the Choiarks with her new form, Cherry Flamenco, she and Hime team up to defeat the Saiark. Afterwards, the girls, along with Blue, explain their situation to Seiji, who decides to help them out in fighting against the Saiark.

Hime is transferred into Megumi's school under the Japanese name Hime Shirayuki, becoming excited at the thought of making 'one hundred friends'. Upon arriving at school however, she is overcome with fear and finds herself unable to face anyone properly. Megumi tries to get Hime to make friends with Yuko, but she becomes too afraid and turns away from her. Whilst lamenting her actions alone in the gym storage, Hime meets a teacher having his own worries about his students not listening to him. Just then, Namakeruda appears and uses the teacher to create a Cone Saiark. Hime initially struggles against the Saiark, but becomes strengthened by her desire to protect the school and make some friends, defeating the Saiark with help from her new form, Sherbert Ballet. Afterwards, Hime gives the teacher some words of encouragement before working up the courage to become friends with Yuko.

On their way to Megumi's house, Megumi and Hime end up doing a lot of good deeds, such as clearing up litter, treating a injured puppy, helping a lost child, and giving someone courage to propose to his girlfriend. After having pancakes with Megumi and her mother, Hime laments how her parents were trapped inside mirrors by the Phantom Empire, whilst Megumi tells her how she wants to help out her mother, who has a weak body, citing her as the reason she loves helping others. Hosshiiwa takes advantage of Megumi's helping nature to lure her and Hime into a trap, attacking them with a Mole Saiark. As Hosshiiwa passes off Megumi's desire to help others as self-satisfaction, Hime stands by her side, believing in the genuine good feelings from helping others, and manages to break them free from the Saiark and defeat it. Afterwards, Megumi gives Hime her thanks for standing by her beliefs.

Ribbon gets upset at Hime when she doesn't want to eat her home cooking and has lunch at Yuko's house instead. Wanting Hime to understand the feelings behind cooking, Yuko asks her to help out at her family's bento shop, where she learns how much hard work goes into preparing food for others. Just as Megumi brings Ribbon over so Hime can apologize, Namakeruda appears with a Bento Saiark to target the shop. Determined to protect the shop, Hime understands the effort Ribbon puts into her cooking and fights back with her Macademia HulaDance form, allowing Megumi to defeat the Saiark. Afterwards, Hime apologizes to Ribbon for her behavior and the two manage to make up with each other.

As Hime decides to hold a 'special party' at her house, Megumi shows up early with the intention of helping out with preparations. Hime, however, wants to prepare the cake she was making by herself, kicking Megumi and Ribbon out of the house when they try to help her out. As Megumi wonders what exactly she did wrong, Ribbon explains that Hime wanted to prepare the cake herself as a surprise for her. Meanwhile, Hosshiiwa targets a newlywed couple and creates a Wedding Cake Saiark, which Hime attempts to fight on her own, but ends up getting overwhelmed. Megumi arrives in time to protect her, with Megumi apologizing for not understanding her feelings and Hime apologising for getting mad at her.

With the HappinessCharge Pretty Cure gaining popularity thanks to TV coverage, Megumi and Hime attend the local festival with some of Megumi's friends, where Hime ends up spending all of her allowance quickly, but enjoys making new friends. The girls decide to have their fortunes read by Iona Hikawa, a girl from the class next to Megumi's, who foretells a terrible future for Megumi and Hime. Just then, Oresky, another commander from the Phantom Empire, targets Megumi's friends and creates two Matsuri Saiarks, which take the Cures off guard. As the Cures are driven into a corner, Cure Fortune appears and single handedly defeats the Saiarks, before telling Megumi that she is better off not partnering with Hime, believing she can't be trusted.

Lamenting over their last battle, Megumi and Hime decide they need to train their bodies. Seiji takes them to his local karate dojo where Iona also practises, along with Megumi's friend Kazumi. The girls are impatient to learn about the advanced fighting techniques, but Seiji insists they start with basic techniques. The next day, as Kazumi nervously prepares to take an exam to improve her rank, she is targeted by Oresky, who creates a Karate Saiark to attack the dojo. As the Cures rush into attack, Megumi is injured from defending Hime from a feint attack. Just as things look their worse, a mysterious new Pretty Cure named Cure Honey uses a soothing song to put the Saiark under her control and give the Cures the encouragement to defeat the Saiark using the techniques they learnt from Seiji. After Cure Honey takes her leave, Kazumi is encouraged to try her hardest in her exam.

Having been caught on a television broadcast, Cure Honey's song has caught on with almost all of the students, much to the dismay of the choir club president, Hitomi, who wants her club to practise seriously for an upcoming contest. Hitomi becomes upset when the rest of the choir club speak up against her strictness, wanting to perform something for more fun, and becomes targeted by Hosshiiwa, who creates a Music Saiark and uses her own song to spread her chaos, desiring to face Cure Honey. Sure enough, Cure Honey shows up to face Hosshiiwa in a vocal showdown and comes out as the winner. Cure Honey then shows off the power of her Honey Baton to help Megumi and Hime defeat the Saiark. Afterwards, as Hitomi makes up with the choir club, choosing to go with Cure Honey's song for the contest, Yuko reveals to Megumi and Hime that she herself is Cure Honey.

Blue explains that he gave Yuko the power to become a Pretty Cure prior to Megumi, though Yuko decides to withhold telling her secret right away. The next day, Yuko invites Megumi, Hime, and Seiji to the mountains, where they all help Yuko's grandparents plant rice used in her family's restaurant. Although Hime is eager to know why Yuko kept quiet about her identity, she comes to understand more of Yuko's kindness. Just then, Namakeruda appears and targets Yuko's grandparents to create a Scarecrow Saiark, with Megumi and Hime unable to fight easily in the mud. As Yuko joins the fight, she discovers the Saiark is resilient to her song, but she is soon supported by Megumi and Hime and manages to defeat the Saiark with her Popcorn Cheer form and her Honey Baton. Afterwards, as the girls eat the rewards of their work, Yuko explains the feelings behind delicious are the reason she became a Pretty Cure, revealing she was too embarrassed to come forward before.