After relocating to a charming coastal town, Hina Tsurugi encounters Yuuki Kuroiwa, a senior at her new school, who introduces her to the world of fishing. Despite Hina's initial fear of marine creatures, a mishap with an octopus leads to her reluctant enrollment in the Breakwater Club, where fishing and feasting on seafood are the norm. Reluctant at first, Hina gradually finds solace and excitement in angling, embracing the camaraderie and adventures that await her within the club.