Shu finds the gang and and now is in the Grand Kingdom's capital city. While that, Grand Kingdom's army is fighting Jiburaro Kingdom's army. Shu Nand the others get inside Nene's place(nene is a villain). While Shu and the others are finding Nene, they discover that Nene is planning to take out children's shadows and using them as their weapons.

Shu and his friends want to hire an informant to help them find the Extra Seven but are told that an informant named Homeron the Great had died in battle against Gran Kingdom. At the same time, they meet the other Homerons ranging from Homeron the Original, Homeron II, Homeron the Legitimate, and Homeron Jr.. To pay for another informant, Shu heads off on his own to defeat the dangerous monster called the Gigarus and claim the reward. Shu and Blue Dragon managed to defeat the Gigarus and the group learns that the woman that hired Shu is actually Homeron the Great. However, Marumaro has gotten lost from the group.

Shu and Co. encounter Homeron again. He reveals that the information of the Extra 7 is somewhere in Gran Kingdom's Castle Des La Teste and they will have to infiltrate it to get to its master computer. Conrad L. Lawrence is shown to be imprisoned in a local prison run by Cynthia which Homeron also tells Shu. Zola comes up with a plan to lure the guards from Castle Des La Teste in order to rescue Conrad and get the information. As the others attack the prison, Homeron, Kluke, and Bouquet infiltrate the castle. Upon rescuing the captive soldiers, Shu and Jiro free Conrad and run into Cynthia. Lemaire also arrives to help Cynthia and both of them begin to overwhelm Shu and Jiro until a successful attack from Blue Dragon and Minotaur weakens them down. Zola catches up after destroying the robots that came with Lemaire. With the reinforcements from Castle Des La Teste approaching, Zola issues a retreat as Homeron begins his infiltration.

When Nene's fortress starts attacking Coreed, Conrad has Shu and Co. ride giant birds called Gryphs to Nene's fortress while Conrad and the others fight Black Shadow Type-Two robots. Zola also tells Shu and the others that Nene is one of the descendants of the Soldiers of Light. They successfully infiltrate the fortress. Once inside, they end up in the S-Field and fight Black Shadow Type-Three robots which have nanobot technology that enables them to regenerate. After recurring take downs on the Black Shadows, Bouquet and Hippopotamus manage to find the control room General Szabo is in and gets in as Nene. Bouquet then reveals herself and then transforms into a Black Shadow Type-Three and manages to use Hippopotamus' new ability to copy the optic attack of the Black Shadow Type-Three which sends General Szabo flying into the air and exploding. After Bouquet shuts down the Black Shadows, Shu and the others locate Nene's throne room for the final battle.

After Shu's brief talk with Primella, Noi finds a path out of Nirvana while Shu options another route for their next destination. Shu and Co. make their way through the city while evading the White Brigade's patrolling shifts commandeered by Furioso's intelligent tactics. During this part, Bouquet's hair touching Marumaro's nose causes him to sneeze giving them away to one of the security shifts. Shu and Marumaro manage to take them down as the next shift appears. Lucky for them before the soldiers ca signal, Jiro arrived and took them down. Jiro manages to create a diversion as Shu and the others make their escape, but Furioso easily recognises the ruse. When Furioso gets ready to intercept and fire where Shu and Co. are, Dr. Tarkovsky intervenes and tells him and the soldiers in the area to fall back, courtesy of Primella's plea.