Before they can fish in the ocean, Haru and Yuki must learn to “Enoshima Bowl.” That evening, Keito announces she is going to the hospital for a checkup. A worried Yuki locks himself in his room, and Keito explains more about life to Haru.

Now that Yuki has his own fishing equipment his enthusiasm for the past time has increased, but Haru no longer wants to do anything that involves the water. Natsuki’s birthday is coming up and his sister wants to have a family fishing trip but what happens on the water affects everybody.

Duck has lost its fleet, and their last resort is a missile bombardment. Yuki and his friends have to convince them not to while at the same time fish for their lives.