I have a soft spot for the classic story archetype where a group of people, driven by some catastrophe or cause, embark on a great odyssey to find, or return, to a home. From Xenophon's Anabasis to Watership Down to the videogame Homeworld, these stories have great power to captivate, move, and inspire.
I was *not* expecting this as a backstory during a side trip in a cooking nomad manga, though.
P.S. Granny was a beauty.