Eventually, the other Freedom Fighters left, pondering over what had just happened, leaving Sonic and Sally.
"What was that for?!" Sonic whispered.
"What was what for?" Sally asked, confused.
"My foot, what do you think?"
"To stop you from opening your big mouth and revealing our secret, of course!"
"And why can't we tell them?
"because-" but Sally was cut off when the door opened, and a 4-year-old hedgehog with green quills and a fox Tail entered the room and walked up to Sonic.
"Sonic!" he said happily.
Sonic smiled and picked up his adopted son.
"Hey, Dax. You Ok?" Dax nodded.
Sally smiled at the sight of the two of them. They were definitely like father and son, these two were. Dax was the son of old Arch-Enemies scourge the Hedgehog and Fiona Fox. Numerous scars littered Dax's body from where Scourge had abused him, though most of them were half-healed. Eventually, Dax had made a break for it and ran to the one mobian that cared about him most: Sonic.
Plus, Dax was the only one who could really keep up with Sonic. Apart from Shadow, wherever he was...
Meanwhile, Robotnik is watching the footage on the last battle.
"Well, it looks like my little friend was right about other engines." he said while holding the engine soul in his fat hand.
"My fleet must be ready soon. Isn't that right...Metal Sonic?" he asked. Two red LED eyes lit up in the darkness and the upgraded robot version of Sonic stepped forward, before standing by his master's side.
"Affirmative, master."
Meanwhile, Uncle Chuck was looking through Robotnik's window from the top of a tall pile of rubbish in the Scrap Brain Zone, using a pair of Rotor's special binoculars. Using them, he could easily see everything that was going on.
"Not good." He then ran for his spy base, where he was greeted by none other than Muttski. "Down, boy!" Chuck then sat at the computer and put on a headset.
Back in Knothole...
Meanwhile, Dax was trying to get Sonic to take him fishing.
"Come ON, Sonic..." Dax pleaded to his adopted father.
"No."
"Please?"
"Last time, the closest we got to actually catching anything was you after you didn't listen to your Aunt Sally to be careful of the edge and you fell in the lake."
"Aww, Man!" Dax began to pout. Then a smile appeared on his face. Sonic knew what was about to happen.
"Oh, no! Not that!" But it was too late; Dax began to use the 'Puppy Dog Eyes' trick he had learned from Tails.
"PWEASE, Sonic?" Dax asked.
"Ok, ok, ok! We'll go fishing!"
Dax grinned in triumph. Before Sonic's communicator went off.
"Hello?"
"It's Sally. Your uncle Chuck wants to meet us RIGHT NOW. He doesn't know it, but what he founds concerns...yeah."
"Ok, Sally. I'll be there in a Sonic-Second!" Sonic switched off the communicator, before turning towards Dax, whose ears had folded back in disappointment. "I'm sorry Dax, but Sonic's gotta go now, all right?"
"You'll be back, won't you?"
"Yes, I'll be back as soon as possible. Why don't you go and play with Tails or Amy? I promise we'll go fishing as soon as I'm back, okay?" Dax's face lit back up. Sonic crouched down and hugged him, before letting go. "Now go on, you little rascal." Dax nodded and ran off to find Amy.
Later...
Sonic and Sally were at the Scrap Brain Zone, with their wing triggers.
Sonic's wing trigger lit up and an image of Toriptor was shown. "What is this place?" one of the she asked.
"One of Robotnik's many bases" Sally explained to the wing souls.
Then, the secret door to the spy shack opened.
"Go!" Sally whispered and the image of Toriptor disappeared.
Uncle Chuck then emerged and led Sally and Sonic into the shack.
"It has been a few months, but as always, Robotnik is building something big. He even stops normal operations to work on It." he explained.
"Just what is he planning then, unc?" Sonic asked.
"Well, I saw that old bucket of bolts, Metal Sonic..."
"WHAT?!"
"And I know I this sounds crazy, but I also saw him talking to a giant talking blue whale with Jet wings."
"That sounds like Jumbowhale!" Sally thought.
The group heads for the bunker, only to meet up with combots, who had been expected them.
"Why, hello there, Sonic, come to die?" Metal asked, landing in front of the group.
"Um, Sal?"
"Sonic, looks like we have no choice."
Both of them each grab their wing triggers, and insert their engine Souls.
"Engine Soul, Set! Let's Go-On!"
There was a flash of gold and silver light and the two stood there, now fully morphed. Uncle Chuck just stood there, his mouth hanging fully open.
"You two!" Metal exclaimed. He hadn't counted on THIS.
"Break the sound barrier, Son-On Gold!"
"Dazzling Princess, Son-On Silver!"
"Take off! Son-On...Wings!"
"Get them!" metal cried, and the robots charged.
"Wing Daggers!"
The Son-On Wings pressed the symbols on their belts, and their daggers appeared.
"Rocket Dagger!" they cried together, slicing the combots to ribbons.
"Hah!" Sonic knocked off the head of another Combot, and then chopped off the arm of another, before slicing the whole robot into two. Behind her, Sonic was dismantling everything that came at him with ease; it looked like nothing could take him down. The two warriors decided to finish the robots. Wings appeared on their daggers and the two flew through the air, right through the robotic army, which fell like a pack of dominoes.
Metal then landed in front of Sonic
"You're mine!"
"Unc, Sally, get to Robuttnik! I'll take care of ol' bucket brain!" Sally nodded and literally dragged Chuck down the corridor.
Sonic stared at his metal counterpart.
"Let's do this!" Sonic charged towards his metal doppelganger.
Metal aimed a punch, but Sonic ducked and responded with a strong kick, sending metal back a few feet.
"You'll pay for that!" Metal's arms turned into machine guns and started firing rapidly, but Sonic flipped a switch on his dagger.
"Mission two – freezing dagger!" Sonic trapped the bullets, and Metal himself, in a block of Ice. Sonic then flipped another switch. "Mission one – Burning dagger!" he gave Metal the full force of the attack, who fell to the ground, badly damaged.
"Done!" Sonic cried.
Metal Sonic then got back to his feet.
"What?!" Sonic asked. Metal simply laughed and teleported out of the building.
