Sonic and Shadow team up and fight Mecha Sonic for the last chaos emerald. Mecha Sonic soon overwhelmed Sonic and Shadow and get the last chaos emeralds from begin to transformed into his ultimate form with all seven Chaos Emeralds

"Chaos Control"

"What?" said Mecha Sonic in surprised with his chaos emeralds are gone. Sonic do spin dadh to Mecha Sonic body and kick him away.

"Very well Sonic and Shadow, but soon i will find all 7 chaos emeralds and transform into my ultimate form again"laughed Mecha white aura arround Mecha Sonic

"Chaos"

"Oh no you don't"said Sonic as he tries to tackle him.

"CONTROL"

Mecha Sonic and Sonic dissapeared,transported them into another dimension leave Shadow behind

"Idiot"said Shadow angrily." I must find a way to follow them" thought Shadow.

Digimon world

Sonic and Mecha Sonic fall onto the ground. Mecha Sonic kick him away and shooting him with his machine gun . He managed to dodge it before Mecha Sonic shot the missle to Sonic. He quickly dodge the missile, it hit the tree. Sonic attack Mecha Sonic with his hand to hand combat and tornado kick. Mecha Sonic managed to block his fist,punched him into the midair and kick him back to the ground,Sonic quickly stand up and charge to fight Mecha Sonic

"Ha Ha Ha" laughed Mecha Sonic. "What so funny?"groaned Sonic. "I have enough for toying you around time to finish you"said Mecha sonic as he power up himself , started to overwhelmed Sonic many times , he shot the beam to Sonic caused a very big explosion. Mecha Sonic want to finish Sonic but he see someone come to him

"Someone come here. Well i will let you live. Next time if you try to stop me to get the chaos emeralds.I WILL CRUSH YOU"Yelled Mecha Sonic before he teleported away. 3 minutes later,a yellow dinosaur find Sonic unconscious on the ground

"What is that blue thing ?" asked yellow dinosaur name Agumon

A boy wearing goggles wearing blue t shirt with messy brown hair name Taichi and a short brown hair girl name Hikari with her digimon Tailmon shocked at they look at the unconsious blue hegehogs

"Sonic !"gasped Taichi and Hikari

"You...you know him !?" shocked Agumon. Tailmon also shocked as well

The end