In a countryside village, Mihira Sanpei, known for his Tohou accent, exudes a carefree and upbeat demeanor. Surprisingly, his true passion lies in fishing, a pursuit that ignites his unwavering focus and determination. Amidst the village's diverse fishing opportunities, Sanpei, despite his novice status, showcases an exceptional intuition for fishing, propelling him to partake in challenging fishing competitions. Through these trials, he hones his problem-solving skills, embraces failures as lessons, and gradually masters the art of angling, deftly extracting treasures from the depths. Along his journey, he crosses paths with formidable adversaries and steadfast comrades, enriching his expertise and fostering personal development.