The Ghost crew joins the Rebel Alliance on Yavin 4

Ezra, Sabine, and the rest of the Ghost crew arrive on Yavin 4 to join the main group of the Rebel Alliance. They meet up with Hera's squadron, who barely survived an Imperial ambush. Mon Mothma criticizes the rebellion's lack of aggression, refusing to stoop to the violence and extremism of Saw Gerrera's rebel cell. The team is sent on a mission to intercept Imperial transmissions and destroy a communications relay. They are joined by Saw Gerrera, who believes the Empire is working on a secret weapon. They discover a group of prisoner engineers being transported to Jedha, and a massive kyber crystal. They help the engineers escape and destroy an Imperial cargo ship. The engineers decide to join the Rebel cause, and the team returns to Yavin 4.