Iroha Inukai lives in Animal Town with her beloved pet dog, Komugi. At Kaihin Park, she is attacked by a strange creature, a Garugaru. At that moment, a stone Komugi found begins to sparkle…

Mey Mey has returned to his original form after having been a Garugaru and asks Komugi to help his friends too. Komugi says she won’t do it unless Iroha joins her, but then a new Garugaru appears.

In Niko Garden, Mey Mey once again asks Iroha and Komugi, “Please help my friends.” Meanwhile, on his way home from Iroha's house, Satoru comes across a mysterious black egg.

Iroha and Komugi return to the Niko Garden and see how the power of a Kirarin Animal can restore it. Once back, they hurry to be the first customers on the opening day of the new Pretty Holic store.

Komugi meets a girl named Ema and her Pomeranian puppy and is reminded of her puppy days. As she is feeling gratitude to Iroha for caring for her, a new Garugaru appears.

Iroha and Komugi get into an argument after they realize the leash they always use for their walks is gone. A new Garugaru appears, but Wonderful gets frozen with fear.

Komugi runs away from Iroha’s home. She meets Satoru in town, who takes her to his house. Meanwhile, Iroha hears about Mayu’s relationship with Yuki and receives a new harness.

It’s Mayu’s first day at her new school, and she’s in Iroha’s class. Meanwhile, Komugi tries to go meet Iroha at school, but she gets distracted and winds up at Pretty Holic.

Thanks to a Niko Diamond miracle, Komugi is now able to go to school with Iroha. She immediately becomes popular, but after eating lunch she gets sleepy and turns back into a dog.

Mayu has come up with ideas for new products at Pretty Holic, but can’t decide which one to use. Watching Komugi and Iroha she remembers when she first met Yuki.

Komugi and the gang hear a rumor about a mysterious creature appearing at Mount Miharashi and decide to investigate. They climb to the summit but don’t see any signs of a Garugaru, but that’s where they notice something important.

Mayu tells Iroha she’s concerned because Yuki seems to be disappearing a lot recently. Iroha brings a security camera to Mayu’s room and as they wait for something to happen, Komugi senses a Garugaru and jumps up.

Komugi and the gang set out to find Nyammy and discover her intentions when the scent of the compact Mayu designed leads them to Pretty Holic.

Yuki isn’t feeling well, so Mayu brings her to Iroha’s house. Iroha suggests that she spend the night to keep watch over Yuki, but the next morning Komugi senses the presence of a Garugaru.

Komugi and the others spend a day helping Mey Mey take care of the Kirarin Animals in Niko Garden. But the Kirarin Animals seem to be hiding something.

Komugi and the others think they might have found a clue to the mystery of the town’s Mirror Stone. Meanwhile, Iroha’s parents see Komugi talking while she’s in dog form.

The season of animal babies has come to Animal Town. Komugi and the others go on a “Baby Animal Tour” but while they are at it, a Garugaru appears.

Yuki, the true identity of Nyammy, tells Mayu not to associate with Komugi and Iroha. Mayu goes to school that day feeling conflicted, but on the way home a Garugaru appears.

Mayu worries about Yuki, who has left home and not come back. Near Pretty Holic, Yuki is watching over Mayu from afar when the same Garugaru as last time appears before her once again.

Although she agreed to come to Niko Garden, Yuki refuses to help Komugi and the others. She refuses to change her mind even when Mayu asks, but then a new Garugaru appears...

Just like Komugi, Yuki has also started going to school with everyone. Yuki is good at studying and sports. After observing Iroha, she decides to tell her about a former friend of Mayu’s.

Komugi and Iroha are invited by their dog trainer friend Inuzuka to try a dog sport called Agility. At first, Komugi doesn’t understand the obstacle course and just runs through everything.

During an afternoon nap, Komugi dreams about a lonely wolf howling. After that, she goes out to the Star Festival and learns that Japanese wolves once lived near Animal Town.

All of the Kirarin Animals have returned, and Niko Garden is restored. The maker of the garden, Niko-sama, appears in egg form, and for some reason the egg comes to Iroha’s room.

For their summer independent research project, Komugi and the others go to the beach in Animal Town. They decide to play in the ocean until the sea turtles begin to lay their eggs, when a Garugaru appears.