Star Wars 27: Yoda's Secret War, Part II

It is a time of renewed hope for the Rebel Alliance
as heroic rebel soldiers strive to undermine Imperial
forces throughout the galaxy. The Galactic Empire
continues to hold its domination and has doubled its
efforts to eliminate any who would stand against its
rule.

When Rebel droid C-3PO gets captured by SCAR
Squadron, Darth Vader's team of elite stormtroopers,
R2-D2 takes off on a solo mission, stranding Luke in
his X-wing.

While searching for R2-D2, Luke turns to the journal
of Ben Kenobi, which contains a story from the
earlier days of Master Yoda. After a daring rescue,
Yoda feels a calling in the Force and follows it –
to a planet inhabited only by children....[3]