After the war Arc Blazers maintain peace throughout the Astral Plane. However, because of the damage caused by the war. Some people believe that the warriors of destiny are not worthy of protecting them. In order to know why the warriors must explore the past of their family. In order to deal with a new enemy in the present.
The future is made of an infinite amount of possibilities each world containing their own story. While none of the stories aren't perfect it's the life the people live that make them special. For in the it's not the end that matters it's the journey.
Read more about Multiverse I.