"Aoi Hane Mitsuketa! Sagashitemiyō Mijika na Tori-tachi" centers around a group of high school students who share a common interest in birdwatching. The protagonist, a reserved and observant student named Haruto, joins the school's birdwatching club after a chance encounter with a rare blue-winged bird during a walk in the woods. This experience sparks his fascination with avian life, leading him to connect with other club members, each of whom brings their own unique perspective and personality to the group.

The narrative unfolds as the club embarks on various outings to observe and document different bird species, often venturing into serene natural settings. Through these excursions, the characters not only deepen their understanding of birds but also develop meaningful relationships with one another. Haruto's initial shyness gradually fades as he bonds with the energetic and outgoing club president, Aoi, who is passionate about conservation and environmental awareness. Another key member, Riku, provides comic relief with his quirky antics but also demonstrates a deep knowledge of ornithology. Meanwhile, the quiet and artistic Sora captures the beauty of birds through sketches, adding a creative dimension to the club's activities.

As the story progresses, the group faces challenges such as habitat destruction and the impact of human activity on local bird populations. These issues prompt the characters to reflect on their role in preserving nature and inspire them to take action, whether through community outreach or participating in conservation projects. The series balances lighthearted moments of camaraderie with thoughtful explorations of environmental themes, creating a narrative that is both engaging and educational. The characters' growth, both individually and as a group, is central to the story, as they learn to appreciate the interconnectedness of life and the importance of protecting the natural world.