Italy is in a deep depression, so to support her family, Marco's mother goes to Argentina to work as a domestic. But after she writes to her family that she is sick, her letters stop coming. So Marco decides to go to Argentina to look for her. He travels across Argentina to find her, meeting many wonderful people, and having many adventures during his journey.

Akari finds herself nervous coaching a new undine as a Prima, until she awakens to find that it is just a dream. To soothe her worries, Alicia recalls stories of her beginnings as a Prima, as well as the memories she made.