Alright to as the plot gets confusing, all 6th dimension characters will have (D-) in front of their name.
(Sixth Dimension)
D-Ferb turned to Phineas as the screech of incoming shells grew closer and said, "We have fifteen minutes before they attack. You need to learn to defend yourself in that time, or else…" BOOM!! BOOM!! BOOM!! Multiple explosions rocked the castle, and waves of fire leapt into the air as artillery shell after artillery shell impacted the fortress. D-Ferb grabbed Phineas by the upper arm and rushed him beneath the walls, dust choking both of them as the entire structure shook violently.
"So what's going to happen?" Phineas yelled over the cries of the already wounded and the repeated pounding of shellfire.
"It's always the same attack, Phineas," D-Ferb replied, leading them through a maze of tunnels and passageways. "First is fourteen minutes of this shelling, trying to knock as many of us out as possible. There will be silence for thirty seconds, and then one final salvo of poisonous gas - you'll need a gas mask for that. Then the machines will attack and those wretched super-soldiers will make an attempt to take this fort. We are the last human stronghold; we cannot fail." D-Ferb stopped in an armory, dead center beneath the castle's center. Soldiers in the same uniform were running everywhere, grabbing helmets from hooks, guns and swords from racks on the wall, and gas masks from a pile on the floor.
"But I've never fought a day in my life!" Phineas shouted as a rifle was thrust into his hands, a belt with ammunition and a small saber was placed around his waist, and a helmet slammed onto his head. Phineas stood shaking in his shoes as D-Ferb turned to him.
"Very simple, Phineas, point and shoot for the head," he barked. Upon seeing the helpless twelve year old so fearful, Ferb rolled his eyes and said, "Then you're coming with me to the tower to see it through. Then decide if you want to join the fight." From those orders onward D-Ferb didn't speak as he led Phineas up a winding staircase to the tallest tower. One guard stood at a machine gun post, the other holding binoculars.
"General, thirteen minutes of siege have passed," one of them reported, and Phineas was shocked to see he was Buford! But not strong and burly Buford of his dimension; this Buford was leaner, bespectacled, and had intelligence in his eagle's stare.
"Recruit Phineas, this is First-Army Commander Buford Van Stomm," Ferb said, and he saw Phineas' shocked expression before continuing, "Different from your Buford, I see." Phineas nodded, dumbfounded, and Ferb gave a small chuckle.
"Gas has begun!" D-Buford announced. D-Ferb barked the order for gas masks on and pulled the alarm siren. Three rocket flares were approaching the city, and although Phineas knew little, these specks of light gave him extreme fear. They impacted the city and instead of exploding began to release a dark green vapor.
"But that man!" Phineas shouted through his mask; someone was caught inside the vapor without a mask. He was gasping for breath; from a distance the hacking cough was heard. He gasped, for as green froth burst from his gaping gasping mouth, and his face turned upward, Phineas recognized this person as well. Though very pale and twisted in agony, he saw this dimension's Baljeet stumble one last time before falling, stirring slightly, and becoming still. Phineas cried out as he watched what was unfolding before his eyes, in that minute Phineas knew he would join the fight.
"I'm ready," he murmured. D-Ferb smiled warmly and worriedly, and then patted Phineas on the back.
"They are coming now," he said, pointing to guide Phineas' gaze to a mass of dark shapes surging toward the main gates. A sharp noise burst in on Phineas and the machine gun manned by Buford began to ring out, sending a hail of lead into the mass.
"Let's get started then!" Phineas yelled, and he ran after Ferb with sword drawn, seeing clearer now that the gas was dissipating. Suddenly a bright violet interrupted the two's advance, and a small explosion threw Phineas and D-Ferb back. Phineas looked up to see Ferb, Isabella, Buford, Baljeet, and Irving stepping out from an inter-dimensional rift in the wall.
"But… but…" Phineas was at a loss for words as he stared at the people before him. Ferb and Isabella ran over and gave him a huge hug, and Isabella added a kiss on the cheek.
"C'mon, buddy, you have to get out of here," Buford said bluntly, looking around the castle walls. Phineas looked from this D-Ferb to Ferb and Isabella; repeating this motion several times before bowing his head.
"No," was his only utterance. Isabella and Ferb took a step back, while D-Ferb nodded respectfully.
"Will your friends join this fight as well?" he inquired, looking toward Phineas' friends from their dimension. Ferb stepped forward to face his stepbrother, and sighed.
"Phineas, are you sure you want to do this?" Ferb asked. Phineas nodded solemnly and Ferb then clapped his hands together with a curt, "Okay," before drawing out six small cubes with a smile.
"Ferb?" Phineas asked as his stepbrother set the cubes down, and pressed a red button on all of them. In a flash of blue light there were six child-sized swords gleaming on the ground.
Ferb picked the swords up and while passing them out explained, "Vibro-Blades, something of my own design before entering this dimension. When you push this button in the center of the hilt the blade with vibrate at such a velocity to nearly break the sound barrier while at least staying stable." He flicked the little button and a sound resembling an angered hornet's nest roared forth, and then calmed to nothing more than a low hum. He tapped the castle's rock wall with the tip, and a six inch hole was blasted away.
"Ferb, you never let me down," Phineas said, turning his own sword on. All of their friends did the same, and then looked at D-Ferb.
"Fine then, you all are joining my elite brigade then," D-Ferb said slowly. Another alarm went off, and then a voice over intercom shouting, "The gate is breached, the gate is breached! All militia to the front gate, we are fighting within the castle!"
"Any of you ever fight against machines programmed to kill without question?" D-Ferb asked, and fearfully all of Phineas' friends shook their heads. "Then you're about to. Follow me!"
Next Chapter: The Seige Part 2
