[Machine Translation] The showdown began on the dream stage of the finals! But who is controlling this competition? The Akatsuki Elementary School Experiment Club is in a crisis when Dr. Sol suddenly disappears. They choose an experiment that has never been presented before and join forces, but like a ship in distress, they lose sight of the path they should take. Eric is upset by the disappearance of Dr. Sol, but then a suspicious document arrives... Let's enjoy learning about the mechanism of waves and the principle of motion, the properties and circulation of seawater, the composition of salts, units of salinity, and various other knowledge about the "sea"!