A new kid, an alien, and a fishing prince. Three unlikely friends brought together in an unusual place - the makings of an unforgettable summer and possibly a world saving adventure await!

Haru, Yuki, and Natsuki just can't seem to see eye to eye on anything. As their problems continue, Yuki decides to quit helping Haru, only to awaken on a roof of a building staring down the barrel of a new water gun.

In order to fish in the ocean, both Haru and Yuki mest learn the "Enoshima Bowl" technique. Keito heads to the hospital for a checkup, and a worried Yuki locks himself in his room.

Haru, Yuki, and Natuski have begun growing more familiar with each other as each day of fishing passes. Things seem to be running smoothly until a certain someone uses a water gun after promising not to.

The fishing lessons have progressed, and Summer is on the way. Yuki decides that it is the right time to get his own fishing pole, but what he wants isn't going to happen with the money he has.