During the 19th century, a 9-year-old boy named Marco was forced to confront the reality of being separated from his mother, Anna. To escape the burden of high taxes and economic suffering in Italy's Genoa, Anna left for Argentina to work. Meanwhile, Marco was left behind in the care of his father, who worked as a doctor at a hospital for the impoverished. Despite his father's presence, Marco could not help but feel the absence of his beloved mother. When communication from Anna abruptly ceased, Marco became deeply concerned for her well-being. Driven by love, courage, and an unyielding desire to reunite with his mother, Marco embarks on an arduous and perilous journey of over 10,000 miles to reach Argentina. Along the way, he encounters various trials and tribulations as he journeys across the vast Atlantic, treks through the Andes, and navigates the spiritual border. The story ultimately follows Marco's journey of self-discovery and growth, as he overcomes great adversity and learns valuable life lessons in his quest to find his mother.