Arriving at Japari Park under Mirai's guidance, Towa meets Serval, an Animal Girl of Serval Cat, and the mysterious fake Serval.

Towa and Mirai, who are now working with Serval, talk about the amulet Towa has on the way. Meanwhile, Caracal is attacked by a fake Serval.

When Serval comes face to face with her friend Caracal, she finds that she is angry with her. Serval understands that it was caused by the fake Serval, but Caracal's misunderstanding is not easily cleared up. But then the fake Serval appears and Caracal's misunderstanding is quickly cleared up.

With the addition of Caracal, Serval's group came to the An'in Region. There, the group heard an unbelievable singing voice and met Crested Ibis, the source of the song. She, too, was troubled by her own singing voice, so the group went to see an animal girl called Wise.

With the addition of Crested Ibis, Serval and the group meet two owl animal girls who are called wise. The girls told Crested Ibis that the sap of the copaiba tree was effective in helping Crested Ibis sing.

The serval group succeeded in getting Crested Ibis to drink copaiba sap, but there was no change in her singing voice. On the contrary, the Celliens came closer. The fleeing group pushed the Celliens down to the bottom of the valley, but the Celliens crawled back up.

Attacked by the Celliens, Serval and her party decide to fight the Celliens. In the fight, Serval and Caracal are wounded, but are healed by the singing voice of Crested Ibis. As a result, they succeed in defeating the Celliens; knowing that Towa's power has transformed Crested Ibis's singing voice into something good, Crested Ibis decides to travel with Towa.

Upon reaching Sankai Region, Serval and her party discovered that the oasis had run dry. The group approached Oryx Arabia to learn more about the situation, and she asked them to search for the missing Thomson's gazelle.

The group of Arabian Oryx and Serval, searching for Thomson's gazelle, encounter Raccoon and Fennec Fox looking for the fake Serval.

Thomson's gazelle, which had been attacked by Celliens, is rescued by a passing fake serval.

Arabia Oryx, Serval and her party discover a Thomson's gazelle being attacked by Celliens. After rescuing her safely, the group learns from Thomson's gazelle what caused the oasis to run dry.

The Serval's group finally discovers a Cellien, which has been running the oasis dry. They defeated a Cellien and restored the oasis. Thomson's gazelle decided to bid farewell to the Arabian Oryx and join Serval's group.