"Akina to Onsen de H Shiyō" centers around Akina, a young woman who inherits her family's struggling hot spring inn, located in a remote rural town. The inn, once a popular destination, has fallen into disrepair due to declining tourism and competition from modern resorts. Akina, determined to revive the business, returns to her hometown after years of living in the city. Her efforts to attract guests and restore the inn's reputation form the core of the narrative.

The story introduces a diverse cast of characters, each with their own motivations and connections to the inn. Among them is Haruto, a local craftsman who assists Akina in renovating the inn, and Yumi, a childhood friend who now works as a tour guide in the area. The interactions between these characters highlight the challenges of balancing tradition with modernity, as Akina seeks to preserve the inn's historical charm while incorporating contemporary amenities to appeal to younger visitors.

As the plot progresses, Akina faces numerous obstacles, including financial difficulties, skepticism from the local community, and her own insecurities about managing the business. The series explores themes of perseverance, community, and the importance of preserving cultural heritage. Through her journey, Akina learns to navigate the complexities of running a traditional inn while fostering relationships with the townspeople and rediscovering her own roots.

The narrative is punctuated by moments of humor and warmth, particularly in the interactions between Akina and the quirky guests who visit the inn. These encounters provide insight into the diverse reasons people seek out hot springs, from relaxation to personal reflection. The series also delves into the history of the inn and its significance to the town, offering a deeper understanding of the setting and its cultural context.

Overall, "Akina to Onsen de H Shiyō" presents a heartfelt exploration of revitalizing a family legacy, emphasizing the importance of community support and the enduring appeal of traditional hospitality. The story balances personal growth with the practical challenges of entrepreneurship, creating a narrative that is both engaging and grounded in its portrayal of rural life and the hot spring industry.