Recap Episode. Kiseki has called another meeting with the Guardians Characters, but no one is paying attention to him. Diamond suddenly hatches, much to the delight of Ran, Miki, and Su. Ran tells everyone of her crazy history with Amu, as does Miki and Su. They begin to fight over whose helped Amu the best, and everyone laughs. Then, they talk about all the Guardians, and then how Diamond hatched. They all begin to feel Amu's radiance in them. Later that day, Amu appears at the Royal Garden and Ran is about to show the hatched Diamond to her, when they see that Diamond has gone back into her egg. Amu questions Ran, and then Su points over to Kiseki. All of the Guardians make fun of Kiseki, causing him to "become a spirit." Diamond momentarily hatches and giggles.

The Guardians gathered around eating doughnuts. Then it shows the Easter workers reminiscing about the past when Nikaidou and Yukari were still working for Easter and when Utau was producing the Black Diamond CDs. Amu goes to talk to Tsukasa, and he tells her that changes are going to happen, and she might not notice it, but the people who pay close attention will. When Amu is heading home, it rains, so she stops under a tree. After saying Ikuto's name aloud, he pops down suddenly from the tree. To Amu's shock, she accidentally slips, leaving Ikuto preventing her from falling and the two talk. Ikuto mentions that Amu has changed somehow. Tadase shows up with an umbrella, gets angry, and fights Ikuto while they both Character Change. Amu decides to do something, and she Character Transforms to Amulet Heart. The Humpty Lock becomes more powerful and her transformation changes, causing the Dumpty Key to respond to the power. The rain clears, showing a rainbow.

Amu is walking along when the Guardians meet up with her. Yaya praises Amu for her powered-up Humpty Lock. With her classmates, Amu goes to visit Manami's flower shop. Manami tells Amu that she dreams of being a florist some day. While Amu is leaving, Lulu de Morcerf shows up to see Manami. The next day, Amu brings Manami cookies for thanks when Miki and Su sense a Guardian Egg (Ran doesn't sense it, but plays along). Amu meets Lulu, and she learns that Lulu can see Guardian Characters. Ikuto sees Lulu walking up the Easter building steps and, after she passes him, stares at her with disdain. Later, Lulu meets Manami again and turns her Heart's Egg into a ? Egg using a special ruby necklace. The Guardian Characters sense this, and the Guardians go to Manami, who Character Transforms into Flower Dream. Amu transforms into Amulet Heart. She almost gets squashed by Manami, but gets powered up pom-poms to deflect the attack. After reasoning with Manami, her ? Egg turns into an X Egg, allowing a stronger Open Heart to purify her. At the end, Amu is with the Guardians, wondering if Lulu was connected to Easter and the events.

Lulu shows Kazuomi a book containing information about the Mystery Eggs. She then offers to shake Ikuto's hand, but he refuses. Amu is standing outside of a store, when a girl walks out. The girl's cell phone rings, and Amu notices her ringtone is "Heartful Song." The two talk, and Amu ends up agreeing to show the girl, Hitomi, Utau in-person. Amu is frustrated, but goes to see Yukari. After being rejected, Amu sees Utau walking out of the building. The two talk, but Miki senses the presence of a ? Egg. They head off to see Hitomi hypnotized, singing and putting everybody in a trance. After Utau criticizes her, Hitomi Character Transforms to Singer Dream; Amu and Miki then transform to Amulet Spade. Amu's Colorful Canvas is overpowered by Hitomi's power, so Amu tries attacking with a new move: Prism Music, and succeeds. Utau then Character Transforms to Seraphic Charm and Angel Cradles Hitomi's ? Egg into an X Egg. This frees everyone else from the trance. Amu finally uses Open Heart to purify the X Egg and free her. The Embryo shows up, so Lulu tells Ikuto to grab it, but Ikuto had left earlier on. When Ikuto arrives home, his violin is missing; it was stolen by Easter.

Nadeshiko returns, but much to Kukai's surprise, he is actually a boy named Nagihiko. When Amu sees him, she is told that Nagihiko would be the new Jack's Chair. Amu still believes Nagihiko is Nadeshiko's twin even though they are the same. Rima is jealous and suspicious of Nagihiko, especially with his and Amu's friendship. Later, Amu is seeing hanging around Mamoru Mizuno who wishes to visit the town's planetarium. Lulu notices this, so she plans to get to Mamoru after he leaves the planetarium, but Amu sees her. Lulu brushes her off, angering Amu immensely. Mamoru later goes to the Guardians with his Heart's Egg turned into a ? Egg, and he Character Transforms to Space Dream. Amu Character Transforms to Amulet Heart. Thanks to the Humpty Lock; Tadase's, Rima's, Yaya's, and Kukai's transformations power-up. Using his powers, he lifts a lot of things off the ground. He tries to lift a rocket-style play set, but the Guardians hold it down. Amu acquires roller skates, Heart Speeder, to chase after him. Eventually, Mamoru realizes he is in the wrong, changing his ? Egg into an X Egg, which Amu purifies.

When Amu makes a high school boy, Yugaku Iwagaki, angry, she gets more than she bargained for as he chases the female Guardians all around the school. While being chased, Amu finds a deer figurine. After the chase, the female Guardians return to the Royal Garden, finding Kukai and Tadase in female school uniforms due to Nagihiko (Kukai asked Nagihiko what it was like to wear a skirt and angered him). The figurine Amu found earlier belonged to Yugaku, who is not only a strong karate student, but also has a love for anything cute. Meanwhile, Easter is studying Ikuto's violin and they want to put X Egg energy into it. Lulu comes by to the Iwagaki dojo and takes advantage of his love for cute things, turning his Heart's Egg to a ? Egg. When Amu comes by, Yugaku Character Transforms to Punching Dream and makes a mess of the dojo. Amu and Rima transform to Amulet Spade and Clown Drop, but after being outnumbered, Su switches in, becoming Amulet Clover. Clearing up misunderstandings, Amu performs Open Heart to purify him.

The Guardian Characters go to Ami's class, the Kindergarten Plum class. Everything appears to be going well for them; all of the Guardian Characters are playing with the children. Panic comes when Nana spots a frustrated student, Maa. Lulu is told of this and manipulates the child, turning his Heart's Egg to a ? Egg. Ami tags along with Amu and the Guardians to go home. Amu and the Guardians notice Maa, and Character Transforms into Amulet Heart. After fighting with clay statues, which keep molding over and over again, Miki switches with Ran. Amu tries to convince Maa to stop, but he ignores her. Finally, Amu says that she will get mad, and Maa hears. She tries to purify him, but after a while, Maa finishes his clay model of Kiseki, and is so happy, that his Egg purifies itself, which causes the statue to collapse. Kiseki mourns for the statue after the collapse. The group is glad Maa is okay, and they head home. Maa's mom comes, and Maa insists she buy him origami paper because he is "done with clay." At home, Amu and her Guardian Characters find out that Ami had gotten a "Guardian Character House" for Ran, Miki,and Su to make them happy.

Amu and her Guardian Characters are watching Utau sing on television when El shows up. She tells them that Utau needs more people to go to her concert so she can get popular again. Amu shows up, but Utau won't listen to her. Amu decides to try and bring Ikuto there. Utau begs Amu, and Amu finds Ikuto. She begs Ikuto to play his violin there, but he refuses. Amu doesn't know that he lost it until he tells her. Ikuto then tricks her, saying that he'll listen if she asks more sweetly. Amu stomps away, embarrassed and angry, then tells Utau he couldn't come. Yukari then entrusts Amu to hand out fliers. Meanwhile, Ikuto tries to get his violin back, but he ends up getting caught and hurt. Amu has no luck handing out fliers, until Tadase, Rima, and Yaya appear. El appears out of nowhere and transforms into Amulet Angel, using Angel Wink to attract some boys to give fliers to. Tadase, Rima, and Yaya also Character Transform to help pass out fliers. Eventually, they get many people to come. Utau sings "Heartful Song," and is still sad that Ikuto couldn't come until she sees Ikuto. She smiles and continues to sing. Amu spots Ikuto and tries to catch up with him, but he leaves before she could thank him. Ikuto smiles because he heard Utau sing.

Amu and her family are sitting around the television eating breakfast. A prediction is made that Amu will find love, to which each family member reacts differently. In class, a girl is using Zodiac signs, Tarot cards, etc., to predict what may happen to classmates. Amu wants to know, but in order to keep her exterior, she asks Rima to go. However, Rima says she'll only go if Amu goes first. Later on, Lulu asks the girl, Koyomi, to predict her fortune. Disappointed, Lulu makes her unhappy. The next day, Koyomi is shown with distress, but she predicts a classmate's fortune. The classmate goes to confess her love for Tadase, while Amu and Koyomi watch. The classmate is rejected, and this sends Koyomi into rage, running off. While running, Koyomi runs into Lulu, who changes her Heart's Egg into a ? Egg, making Koyomi Character Transform to Fortune Dream. While running after her, Amu's Guardian Characters sense this, and Amu Character Transforms to Amulet Clover. Seeing Koyomi causing misfortune towards the townsfolk, Amu uses with Honey Bubbles to clear their delusion and stop Fortune Dream's attack.

While a girl named Hinako moves away, her Guardian Egg drops out from her package. Amu notices this and picks it up on her way to the Royal Garden. She, Kukai, and the Guardians discuss and decide to find the owner of the egg. While the rest of the Guardian Characters are asleep, Diamond awakes and appears as a projection and gives who is in the egg reassurance. The egg eventually hatches to reveal Kiran, Hinako's Guardian Character. The Guardian Characters go places, having fun, helping out others, and try to find Kiran's owner. Yoru, Il, and El later come and decide to help. They eventually find Kiran's owner and part ways after Hinako is troubled, hurting Kiran. Amu gets a text message from Utau, telling her where to find her Guardian Characters. She eventually meets up with the rest of the Guardians.