Hiwa Natsunagi, 19, resides in Iwaki City, Fukushima Prefecture. Uncertain of her future after high school, she applies to become a dancer at Spa Resort Hawaiians, inspired by her late sister Mari who performed there professionally before perishing in the 2011 Tōhoku earthquake and tsunami. Hiwa secures the position despite having no prior hula experience or formal training.

Her journey begins with extreme clumsiness and difficulty synchronizing with her teammates, leading to failure. Their disastrous first stage appearance earns them the label "the most lamentable newcomers ever." Hiwa's self-doubt and physical awkwardness contribute to mishaps, including appearing onstage with a coat hanger in her dress. She perseveres through dedicated practice and teamwork to overcome these challenges.

Hiwa gradually forges stronger bonds with her four teammates—Kanna Kamakura, Ranko Takigawa, Ohana Ka'aihue, and Shion Shirasawa. Shared experiences, encompassing both successes and failures, teach them trust and mutual support, vital to their collective improvement. Hiwa also navigates personal feelings for her coach, Ryōta Suzukake, discovering others share her affection.

Her motivation is deeply tied to honoring Mari's legacy. Encounters with those who knew her sister provide emotional context, strengthening Hiwa's resolve to succeed as a hula dancer. This connection serves as both inspiration and a burden she learns to carry positively. Her growth culminates in renewed determination to master hula dancing, transforming it from a tribute into her own chosen path forward, encapsulated by her commitment: "I will live on Hula."

Hiwa also serves as a tourism support personality for Iwaki, promoting local attractions and cultural revitalization efforts tied to Spa Resort Hawaiians, reflecting the film’s role in commemorating the region’s recovery a decade post-disaster.