Akari Mizunashi, at the age of 15, has left everything behind to travel to a sparkling planet covered in water, Aqua. More than anything, Akari wants to be an "undine" - a female gondolier who navigates the canals of the Aquan city of Neo-Venezia. As she begins her training with the prestigious Aria Company, will she be up to the challenges that await her on the path to achieve her dream?

Akari, Aika and Alice are three girls who share a single dream: to become the most talented gondoliers in all of Neo-Venezia! Every day they train toward their goal, exploring all the wondrous sights that the water-covered planet Aqua has to offer. Whether it's spending a wild day at Carnevale, sharing a beautiful sunset, or even crossing paths with the mysterious spirits that dwell in Aqua's shadows, for these three friends, each day is a new adventure!

Akari, Aika and Alice continue to strive toward their goal of becoming Neo-Venezia’s top gondoliers. But as their skills improve, they find themselves faced with new challenges. On their journey to become Primas, the three girls will have to paint a palina, serve as hostesses at the Festa del Redentore, and even learn how to be brave in the face of a dangerous passenger!

As winter melts into spring, Akari, Aika and Alice continue to work hard to become Neo-Venezia's top gondoliers. Aika starts to take on more responsibility around Himeya, Alice travels up the challenging canal near Hope Hill, and even Akari spends a day working on a huge gondola called a traghetto! But there's still so much to learn... and the final test to become a Prima, which once seemed so far off in the future, might not be so far off anymore.