A Lecture to One's Final Battle in Their Journey

After his loss in the Kalos League, Ash had wanted a break.
A break from his traveling and battles to figure out what to do. He's been traveling for the past seventeen years and feels like hes close to something he want's but isn't sure what. Confused if he really wants to become champion.
With a vacation to Alola with his mother, he then spent his summer with new friends and learning so much about pokemon from their professor Kukui.
And when opprotunity comes when the Galar Region, is allowing some visitors into their borders to possibly open their country, Ash bids farewell to his friends and mentor on Alola as he sets forth to Galar.
However, he is unable to take his pokemon due to customs and the country is not ready for foreign pokemon, and leaves Pikachu with Lillie till then, accident occurs upon his flight.
All he remembers, is on a beach, with lush grass fields, and someone calling for help before he blacks out.
As the world knew it, Ash Ketchum went missing.
The search still continuing for two years, right when the Galar Region opened their borders, and was holding the world's biggest tournament of regions.