Happiness Charge Precure!

As Pretty Cures all over the world fight against Saiarks, minions of the evil Phantom Empire led by Queen Mirage, Himelda "Hime" Window, also known as Cure Princess, feels downhearted after losing yet again to the Saiark, having to be bailed out by another Cure named Cure Fortune. Blue, the god of the universe, gives Hime a Crystal of Love so that she can find a partner to fight alongside her. Excited to be able to have a friend, Hime decides to randomly throw the crystal to decide her partner, which randomly lands on a girl named Megumi Aino. Hime, along with her fairy partner Ribbon, follows Megumi as she goes about her shopping, helping others when they're in trouble. As Hime makes her presence known, Megumi becomes awed by her fashion sense and decides to become friends with her, but is taken aback when she is suddenly told to become a Pretty Cure. Just then, one of the Phantom Empire's commanders, Namakeruda, traps Mao, the younger sister of Megumi's childhood friend Seiji Sagara, inside a mirror, reversing her happy thoughts to create a Hat Saiark. As Hime struggles to fight against it due to her fear, Megumi steps in to protect her, stating that even though she herself is afraid, she will never put her own safety before others. This awakens her potential and turns the crystal into the Pretty Change Mirror, allowing her to transform into the Pretty Cure, Cure Lovely. Note: Cure Black celebrates the 10th anniversary.

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. Deciding to name themselves the HappinessCharge Precure, Megumi and Hime appear before Namakeruda once again, fighting past his army of Choiark henchmen before confronting the Hat Saiark again. With Megumi's assistance and encouragement, Hime manages to purify the Saiark and free Mao from her imprisonment. After Mao's feelings are then converted by Ribbon into more PreCards, Megumi and Hime promise to keep helping each other out from now on. Note: Cure Dream celebrates the 10th anniversary.

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. Note: Cure Passion celebrates the 10th anniversary.

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. Note: Cure Moonlight celebrates the 10th anniversary.

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. Hoshiiwa takes advantage of Megumi's helping nature to lure her and Hime into a trap, attacking them with a Mole Saiark. As Hoshiiwa 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. Note: Cure Happy celebrates the 10th anniversary.

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. Note: Cure Egret celebrates the 10th anniversary. The opening features the first set of scenes from the upcoming Pretty Cure All Stars New Stage 3 Eternal Friends.