Your adventure begins on your 16th birthday in the Kingdom of Aliahan. After a brief introduction from your mother, you will be summoned by the King. He will task you with continuing your father Ortega's quest to defeat the Archfiend Baramos. Before you leave, you'll need to assemble your party.
While Dragon Quest III introduces the party recruitment system in Aliahan, Dragon Quest X later evolves this mechanic through its AI-controlled support companions found in the various taverns.