Yuki is an introverted teenager whose intense fear of public speaking makes it difficult for him to make friends, so hoping for a fresh start, he moves with his grandmother to the small island of Enoshima. Shortly after his arrival he encounters Haru, a strange youth claiming to be an alien - and what's more, the otherworldly visitor requests his help to catch a strange being that inhabits the local waters! Along with fellow classmate and local angling celebrity Natsuki, the boys must now form a bond in the hopes of saving the town from the force that is threatening it. With a mysterious organization also lurking about and posing potential danger, Yuki must put his best face forward and protect the island... with the help of a fishing rod?!