Akari Mizunashi continues her training to become a Prima Undine (a professional tour guide gondolier) alongside her friends Aika and Alice in the tranquil city of Neo Venezia. Although these three girls work for rival companies, they are constantly together, learning how to improve as tour guides and uncovering more about the mysteries of Neo Venezia. As the group encounters interesting and unforgettable people through their daily routines, they also draw closer to the secrets that make the enigmatic and ever-beautiful city of Neo Venezia so warm and alive. Welcome back to Neo Venezia: the city where miracles can be created by hand.