Here is an overview of the game, via Square Enix:
If you’d like a more light-hearted play through of the latest in the line of Final Fantasy titles, explore the world of Final Fantasy XV with a cast of adorable characters in Final Fantasy XV: Pocket Edition HD!
Take the journey and experience the Final Fantasy XV story in the cutest way possible!
After years of fighting, the nations of Lucis and Niflheim at last agree to an armistice.
As a symbol of this promised peace, Noctis, crown prince of Lucis, is to wed the Lady Lunafreya of Tenebrae.
The prince sets forth for his wedding on the eve of the signing ceremony, sent off by his father, King Regis. Unbeknownst to Noctis, however, the journey ahead is fraught with perils…
Watch the Switch launch trailer below.