After having escaped Final Space, Invictus and the Titans lay havoc to the Galaxy but their forms remain unstable. Multiple Final Space breeches open up, unleashing a sentient parasite of Final Space poisoning called The Aggregate that have wiped 70% of the Galaxy. Secluded in the outer edges of the Galaxy, lies an esoteric artifact to help stop the Titans and destroy the Graters.

The Aggregates are a mysterious spaceborne disease originating from Final Space that have wiped out 70% of the Galaxy's population. The Titans lay havoc all throughout the Galaxy, with only the outskirts being safe. The secret to recovering Final Space, defeating the Aggregate and winning the war against the Titans lies in a mysterious ancient book called the Galactic Enchiridion.