Yuma and Tori could be characters from a small - scale, indie story that has a dedicated but not widely - known fan base. The fanfiction allows fans to expand on their relationship, imagining their married life in ways that the original story might not have delved into deeply, perhaps adding more depth to their characters and their connection.
3:10 to Yuma is purely fictional. It was created for entertainment purposes and doesn't draw from real-life events. The plot and characters were made up by the filmmakers.
It could be about a journey from a place known as 310 (maybe an area code or some other identifier) to Yuma. It might involve the experiences of the characters during this travel, like the challenges they face on the road, the people they meet, or the personal growth they undergo during this trip.