"Pic-lele ~Mezase! Ukulele Picnic in Hawaii~" centers around a group of young girls who embark on a musical journey to master the ukulele while exploring the vibrant culture and scenic beauty of Hawaii. The protagonist, Himeko, is a cheerful and determined girl who dreams of becoming a skilled ukulele player. Alongside her friends, including the shy but talented Aoi, the energetic and competitive Riko, and the knowledgeable and supportive Nao, Himeko forms a ukulele club at their school. Together, they set their sights on participating in the prestigious Ukulele Picnic, a renowned music festival held in Hawaii.

The narrative unfolds as the girls face various challenges, both personal and musical, as they prepare for the competition. Each episode highlights their growth as individuals and as a team, emphasizing themes of friendship, perseverance, and cultural appreciation. The series incorporates elements of Hawaiian culture, showcasing traditional music, dance, and local customs, which serve as both a backdrop and an integral part of the story. The characters’ interactions with local musicians and mentors provide opportunities for learning and self-discovery, enriching their understanding of the ukulele and its significance in Hawaiian culture.

As the Ukulele Picnic approaches, the girls must overcome setbacks, including self-doubt, rivalries, and technical difficulties, to deliver a performance that reflects their passion and dedication. The series balances lighthearted moments with emotional depth, creating a narrative that resonates with viewers of all ages. Through their journey, the characters not only improve their musical skills but also forge lasting bonds and gain a deeper appreciation for the power of music to connect people across cultures.