After Chamber wiped out all of the pirates that were threatening Bellows and her people, Ledo is perceived as a menace and kept under guard by the crew of the Gargantia. And perhaps rightfully so, as the pirate armada that is Empress Lukkage's fleet is racing towards the Gargantia Fleet with bloody revenge in mind...
Amy asks Chamber and Ledo if they murdered the pirates. When Ledo confirms it, Amy runs away after calling Ledo an idiot. Meanwhile, Bellows and the others discuss about what to do with Ledo and Chamber since the pirates will want revenge. Ferrock tells them to formulate a plan when the pirates make their move. Amy takes Bellows to Ledo where Bellows chats with Ledo about taking the lives of the pirates. Bellows gives Ledo a communication device and thanks Ledo for saving her life. Once Bellows leave, Amy asks Ledo to stay here with them.
Out in sea, the pirate queen receives her report about Ledo. In the captain's room, the men report that Lukkage's fleet of 30 ships is approaching them. Ferrock states that they don't have enough speed to outrun them. Bellows asks Ferrock if they can use Ledo's Yunburo (Chamber). Ridget asks Ledo why they help Gargantia despite they can destroy this fleet easily. Ledo replies that he wants to make a deal and repeats Bellows' saying. Ferrock accepts Ledo's help. That night, Ridget goes over the plans with Ledo. Above Lukkage's fleet, Chamber uses his spotlight to reveal the enemy's location. Gargantia's fleet unleashes its cannons on Lukkage. In response, Lukkage begins their counterattack. Chamber informs Ledo that the allied forces will not last for long. Ledo has Chamber disable the ships' cannons without taking any lives. The pirate's submarine unleashes their Yunboros into combat. Empress Lukkage uses her special Yunboroid to charge towards Gargantia's main ship. She crashes her jet into the main ship and begins to climb up the main ship. When Chamber grabs Lukkage's Yunboroid from behind, Lukkage's slave girls fire their grappling hook to pull Chamber off Lukkage's Yunboroid.
However, Chamber pulls Lukkage's Yunboroid along with her slaves into the sky. He tells everyone to surrender as he swings Lukkage round and round. Lukkage gets thrown over sea. As a result, Lukkage's men flee from the battle. Everyone on Gargantia thanks Ledo and Chamber. When Ridget asks Ferrock what to do with Ledo, he asks Ridget what she would do after referring to Chevron, Ridget's father. Upon arriving home, Amy offers Ledo a basket full of fish. Ledo struggles to enunciates thank you to Amy.