After watching the Gokaigers defeat another wave of Zugormin with Go-on Gokaioh and Goujyujin, Warz Gill throws his usual temper tantrum over the loss until Insarn tells him of the unexpected visit from two members of the Imperial Guard, the Dogomin. Meeting with the Dogomin, Warz learns that they have brought with them the Great Warz robot, the Zangyack Empire's greatest war machine, for him to get the invasion back on track. Damarasu protests when Warz insists that he himself will personally pilot the Great Warz and the prince reveals to him that he had overheard Damarasu's conversation with his father the Emperor, who appointed him as second in command for the Earth Invasion Force to ensure its success due to the lack of confidence in his son's ineptitude as a leader. Having decided to make use of this opportunity to prove himself to his father and everyone else that he can conquer Earth on his own, Warz sends Barizorg in advance to track down the space pirates. On the Gokai Galleon, after the crew are caught off guard by Machalcon's question of what their own Great Power is, the crew frets over the Zangyack Empire constantly getting in their way. Gai points out that they are protecting Earth so fighting the Zangyack and any other villains' attacks are expected. This causes Captain Marvelous to remember something Aka Red told him as he shrugs off Gai's suggestion of a direct confrontation. Later, Joe explains to Gai that fighting the Zangyack Empire directly sounds more like a suicide mission than their usual indirect confrontations. Though presented with this new information, Gai still intends to fight the Zangyack Empire head on. Suddenly, the ship gets hit by a group of Gormin led by Barizorg as the Gokai Galleon crew come down to face them. Joe decides to face Barizorg by himself and the rest of the team agrees to cover for him. While the Zugormin and Gormin are easily wiped out by the pirates, the Dogomin arrive and prove themselves as tougher opponents and the team makes use of some of the extra warrior Ranger Keys to drive them off. Barizorg and Gokai Blue's match reaches a stalemate when Warz Gill arrives to give the Gokaigers a final chance to kneel before him. When they refuse, Warz has Insarn deploy the Great Warz to Earth so he can pilot it. Gokaioh and Goujyujin are formed to face the Great Warz, which knocks Machalcon back into Machine World before overpowering the Gokaigers' Goujyu Gokaioh formation. Sparked by his memories of Aka Red's death, Captain Marvelous refuses to let his crew die as he forcibly ejects them to safety. The Gokai Galleon crew are forced to witness Goujyu Gokaioh being defeated with their captain going down with the Gokai Galleon.