the days before Dragon Quest VI, when Terry and Mileyu were
just children, a strange monster appeared one night and snatched
Mileyu away. Soon after, another monster, similar to the kidnapper,
appeared and told Terry his sister was kidnapped by the evil Warubou.
He informs Terry that his name is Watabou and must accompany him
to the Tree Kingdom of Taiju. After his arrival, Terry met the King
and received his first monster to train. If Terry wins the Monster
Trainer's Shooting Star Tournament, he will be granted a wish. So
Terry sets out with his team to explore the many monster dungeons
to win the tournament and rescue his sister.