Second mission to the third moon of Concord Dawn In 2 BBY , members of Phoenix Cell undertook a mission to the third moon of Concord Dawn . After the Phoenix Cell lost contact with the Journeyman Protector s , Fenn Rau , Sabine Wren , Ezra Bridger , and Chopper traveled to the third moon to investigate . They discovered that Imperial Mandalorian s under Viceroy Gar Saxon had attacked the encampment and massacred the Protectors . Working together , they managed to escape the Protectors and flee offworld . Due to their shared experiences , Rau decided to join the rebellion . Prelude . In 3 BBY , Sabine Wren , Kanan Jarrus , and the astromech droid Chopper kidnapped Fenn Rau , the leader of the Journeyman Protector s , after he attacked a rebel delegation in the Concord Dawn system . Rau ordered the Protectors to allow the rebels safe passage through the system in return for keeping his captivity a secret . Rau was treated well by his rebel captors and eventually came to interact with Sabine , who tried to win him over to the rebellion . On Mandalore , the ruling Viceroy Gar Saxon and his Mandalorian super commandos collaborated with the Galactic Empire . They believed that the Empire would make Mandalore great again and had an acrimonious relationship with the Protectors of Concord Dawn . After learning that the Protectors were allowing rebel ships to use the system as a thorough - way to avoid Imperial sector patrols , Saxon and his followers attacked the Protectors Camp on the third moon of Concord Dawn . They slaughtered everyone at the camp but failed to find Rau , who was their primary target . After losing contact with the Protectors , Hera Syndulla and the rebel commander Jun Sato summoned Rau and Sabine for a briefing . While Sato and other rebels leaders believed that the Protectors were trying to lure them into a trap , Rau suspected that something had befallen his followers and asked permission to investigate . Hera agreed but sent Sabine , Ezra Bridger , and Chopper to keep an eye on him . The rebels and Rau traveled to the Concord Dawn system in the repurposed " Sheathipede " - class shuttle " Phantom II " . The mission . Scene of Desolation . During the journey to Concord Dawn , Fenn Rau managed to break free of his restraints and stun ned Sabine and Ezra . After cuffing them , he departed the ship and went to the site of the Protectors ' camp . There , he discovered that another Mandalorian faction had murdered his followers and burnt several buildings . Chopper managed to free Sabine and Ezra . Together , they found Fenn , who was despondent over the loss of his comrades . Following a brief argument between Fenn and Sabine , Chopper picked up a signal . The rebels were attacked by an Imperial probe droid but Sabine managed to destroy it . Before they could leave aboard the " Phantom II " , a column of Imperial super commandos led by Gar Saxon arrived . The rebels fled among the complex but Saxon and his men managed to capture Chopper and Ezra . Sabine and Fenn managed to escape and find a safe vantage point from where they could observe the enemy force . Counter - offensive . Meanwhile , Gar Saxon interrogated Ezra and Chopper . Ezra tried to claim that he was a scavenger but Saxon disbelieved the boy and forced him to cooperate by threatening to shoot Chopper . Despite Ezra ' s attempts to mislead Saxon , the Viceroy managed to force the boy to reveal that Fenn Rau had sent him . Elsewhere , Sabine and Fenn debated the merits of rescuing Ezra and Chopper . Sabine was adamant on rescuing her friends and managed to convinced Fenn to retrieve the " Phantom II " in order to keep the ship out of Imperial hands . Sabine feared that the Empire would learn the location of the Phoenix rebel base . Due to his hatred for Saxon , Fenn agreed to a truce with Sabine . Back in the hut , Saxon discovered that Ezra was a Jedi after he managed to deflect Saxon ' s blasts from Chopper . Sabine managed to rescue her comrades by using smoke grenades to disorientate Saxon and his guards . The rebels then tried to escape aboard the " Phoenix II " only to find that Fenn had stolen the ship . Saxon and his super commandos then surrounded the rebels and confronted Sabine . Out of respect for Sabine ' s mother , he offered to spare Sabine ' s life if she helped them find Fenn and pledged her allegiance to Saxon . Sabine refused and got Chopper to activate Frequency 337 on her helmet , which temporarily disoriented Saxon and his men out . Escaping Gar Saxon . Chopper activated his rocket boosters while Sabine and Ezra shared a jetpack . The three rebels fled into a canyon but were pursued by Saxon ' s Mandalorian super commandos . Ezra managed to use his lightsaber to damage the jetpack of one of their pursuers , knocking him out of the pursuit . Sabine then used several grenade s to block the path of the super commandos . Saxon and his remaining men caught up with the rebels . At one point , Ezra was forced to ride on Chopper . Meanwhile , Sabine managed to shoot another Mandalorian super commando and blow up his jetpack . After a perilous pursuit , the rebels reached Gar Saxon ' s starship , which lay at the top of the plateau . The rebels planned to steal it and flee offworld . However , Saxon and his remaining super commando caught up with them and managed to disarm Sabine . Before they could execute the rebels , Rau experienced a change of heart and returned in the " Phantom II " . Fenn managed to shoot the remaining super commando and blow up Fenn ' s ship . This allowed Ezra and Chopper to flee aboard . Following a struggle , Sabine managed to fight off Saxon and flee aboard the " Phantom II " . Aftermath . As a result of the second mission to Concord Dawn , the rebellion learned that the Protectors of Concord Dawn had been killed by Imperial super commandos led by Viceroy Saxon . Sabine ' s efforts to save Ezra and Chopper despite them not being Mandalorians won her the respect of her former adversary Fenn Rau . With his followers dead and with Saxon vowing to kill him , Rau decided to join the rebellion . As a result , the rebels gained the support of a seasoned Mandalorian warrior and commander .