Unfinished Business " Unfinished Business " is an unfinished episode from the animated television series " " . It premiered in story reel form on April 17 , 2015 at Celebration Anaheim , and it was later released online on April 29 , 2015 . Official description . " " The Republic plans a daring final strike against Wat Tambor and Admiral Trench , once again bringing together Rex , Echo , Anakin Skywalker , and the elite Bad Batch squad . " Plot summary . At Fort Anaxes , the Jedi Master s Mace Windu and Obi - Wan Kenobi brief Anakin Skywalker and Rex about their plan to retake Anaxes from the Separatists . The newly - rescued Echo offers to assist the war effort , but Rex cautions his comrade that he is not yet ready . Windu , however , expresses interest in hearing Echo ' s plan . Echo ' s plan is to infiltrate the Separatist Admiral Trench ' s dreadnought above Anaxes and mislead him by feeding the Separatist systems false strategies in order to secure a Republic victory on Anaxes . When Kenobi expresses concerns that the Separatists would have been informed about Echo ' s loss , the former prisoner assures them that the Techno Union foreman Wat Tambor is a businessman who is unwilling to admit his failures since it would adversely affect his profit margins . Windu consents to the plan . Skywalker , Rex , Echo , and the Bad Batch depart for their mission aboard the " Havoc Marauder " . While flying to the Separatist fleet , Wrecker moans about being sent on another " stealth mission . " The clones managed to obtain permission to dock with the Separatist dreadnought after Echo transmits a signal cloaking their ship as the Separatist shuttle TC - 59 . Meanwhile on Anaxes , Republic forces under Masters Windu and Kenobi attack the main Separatist assembly plant with LAAT gunships and Y - wing starfighters . Upon entering the assembly plant , Windu offers the B1 battle droid s there the chance to surrender and be reprogrammed . However , the droids reject the offer and attack Windu and his men . Meanwhile , the clones use grappling hooks to descend into the factory . On Trench ' s dreadnought , a Super tactical droid informs the Admiral that the assembly plant has come under attack . Trench smiles and remarks that he will use the Republic ' s arrogance and desperation to his advantage . Meanwhile , Echo along with Tech and Anakin infiltrate the dreadnought ' s interface unit and put their plan into action . Unaware of the recent events on Skako Minor , Admiral Trench orders his tactical droid to contact Skako Minor for Echo ' s algorithm . Tech is able to mask Echo ' s transmission as originating from Skako Minor , fooling Trench . Posing as the algorithm , Echo advises the Admiral to mobilize all troops to the assembly plant , claiming that the Republic would send all their reinforcements there due to their faith in the Jedi . The Separatist plan was to smash all Republic forces with one strike . Admiral Trench gloats and deploys more reinforcements to the assembly plant . Tracker picks up Trench ' s transmission and informs his comrades . Hunter initially sees this as a bad sign until Echo explains that his plan to send a feedback pulses to shut down all of the Separatist droids . Anakin then informs Windu and Kenobi about Echo ' s plan , which they attribute to Skywalker . Believing victory is imminent , Trench deploys all his forces to the assembly plant . Echo then issues the pulse shutting down all of the Separatist droids . Trench is shocked by the algorithm ' s failure . The tactical droid then informs him that the source of the pulse originated on his dreadnought . Realizing that intruders are aboard his ship , Trench dispatches battle droids to deal with them . Trench then vows to unleash utter annihilation on his Republic foes . Before the clones can leave , Echo receives a transmission that Trench plans to activate a bomb beneath the assembly plant . Echo resolves to stop Trench ' s plot while Skywalker makes his way through the ship to confront the Admiral himself . Back on Anaxes , Windu and Kenobi receive word from the clones that Trench has planted a bomb in the plant ' s fusion generator , and they need help to disarm it . While Kenobi orders an evacuation of all Republic forces from the plant , Windu descends into the fusion generator to find the bomb , only to find it ' s protected by a ray shield . While Echo transmits the sequence to shut down the bomb , Windu uses the Force to move the dials . Their work is interrupted when Trench traces down the source of the illegal pulse and jams its signal . This has the effect of electrocuting Echo and rendering him unconscious . The clones are then attacked by several B2 super battle droid s and Windu orders them to retreat . Meanwhile , Admiral Trench orders an assault on Anaxes and sends more troops to deal with the clone infiltrators . He attempts to exit the command bridge but is blocked by Anakin , who strikes down his tactical droid and several BX - series droid commando s with his lightsaber . Anakin then demands that Trench reveal the final number in the sequence to disarm the bomb , but the Admiral only taunts him . In response , Skywalker severs his left set of arms and reiterates his demand . Trench complies and Anakin reveals the final number to Windu who is then able to disarm the bomb . Trench attacks Skywalker with his right set of arms but the Jedi kills him with his lightsaber . Before exiting the command bridge , Anakin steals the remote detonator as a favor for Wrecker , who enjoys blowing things up . Elsewhere on the dreadnought , the clones fight back against countless battle droids . Wrecker charges at the droids and manages to rip several to pieces . Meanwhile , Crosshair plants several detonators on the ship ' s corridor and a battle droid . Having accomplished their mission , the clones escape with Skywalker on the " Marauder " . After they depart , Wrecker uses the remote detonator to blow up Trench ' s dreadnought and several surrounding warships . Following the battle , Windu , Kenobi , and Skywalker preside over an awards ceremony where awards are handed to Rex , Echo , and the Bad Batch . Due to their victory on Anaxes , the planet ' s shipyards were able to continue producing warships for the Republic war effort . Several astromech droid s and Commander Cody also attend the ceremony .