This video explains the First Order beyond the outer rim of the known galaxy to the unknown regions. This Star Wars video looks at when Palpatine’s contingency plan (Operation Cinder) began and when it was disrupted by Sloane.
The battle of Jakku was a time when Palpatine’s contingency plan was unleashed by Gallius Rax and Yupe Tashu inside Palpatine’s secret observatory. However, it was foiled by Rae Sloane before traveling to wild space with Brendol and Armitage Hux to the Unknown Regions.
Material is sourced from the star wars Canon expanded universe/galaxy.