"Encouragement of Climb: Next Summit" continues the story of Aoi Yukimura, a shy and reserved high school student who rekindles her childhood passion for mountain climbing after reuniting with her energetic and adventurous friend, Hinata Kuraue. The series explores their shared experiences as they tackle various mountains, gradually building their skills and confidence. Alongside them is Kaede Saitou, an experienced climber who mentors the duo, and Kokona, a younger girl who joins their group, adding a fresh dynamic to their adventures.

The narrative emphasizes the challenges and rewards of mountain climbing, blending lighthearted moments with themes of personal growth and camaraderie. Aoi’s journey is central, as she overcomes her fears and insecurities, learning to appreciate the beauty of nature and the importance of perseverance. Hinata’s boundless enthusiasm contrasts with Aoi’s cautious nature, creating a balanced partnership that drives the story forward. Kaede’s expertise and Kokona’s youthful curiosity further enrich the group’s dynamics, highlighting the diverse perspectives within the climbing community.

Each episode typically focuses on a specific mountain or climbing goal, showcasing the preparation, teamwork, and problem-solving required to reach the summit. The series also delves into the technical aspects of climbing, such as gear selection and safety protocols, while maintaining an accessible tone for viewers unfamiliar with the sport. Through its episodic structure, "Encouragement of Climb: Next Summit" captures the incremental progress of its characters, both in their climbing abilities and personal development, offering a grounded and relatable portrayal of their journey.