There are various barriers throughout space that are blocking anyone from being able to travel from world to world. Basically these barriers are like invisible walls that our Gummi Ships run into. They don't damage the ship but it prevents the Gummi from going any further. Researchers have come to the conclusion that these barriers are seals. They seal anyone from being able to move too far away from a certain world. These researchers have figured out that there is some kind of "key" that controls the seals. If this key is destroyed then the seals will be destroyed as well. It seems like a key is on every world. One unnamed hero has proven that these key's are actually strange monsters that have appeared on the world. These monsters need to be destroyed to unseal the barriers. It's up to everyone to try to find these monsters and destroy them! These monsters will appear in Event Threads that the staff control. Everyone may join them to try to get rewards and forward the story.