The older Leo and Splinter knew that Donnie was running out of time. They needed to end this before he was further injured.
Leo let fly a kick sending his Foot opponent careening backwards. The evil ninja rose slowly holding his hand across his stomach. The older turtle was indeed a formidable opponent. Leo dropped into a defensive stance.
"BRING THAT WEAPON TO ME!" the Shredder bellowed.
Shocked, the Foot Elite looked down at his feet at the damaged blaster. With a cry Leo leapt forward but he was too late. The Elite had already grabbed the weapon and was sprinting towards his master.
Splinter quickly delivered a roundhouse kick to his opponent before using the opportunity to run to his sons. Whatever the Shredder had planned it wasn't good.
As all converged on the Shredder, Donnie tried desperately to distract the villain. Running forwards, the young ninja cried out, only to have the Shredder blast a kick into his stomach.
The wind knocked out of him, Don landed with a crash just beside the portal.
"Donnie!" Mikey cried.
He and Raph had finally made it over with Leo. Leaving Raph to hold Leo, Mikey ran forward helping his battered brother up. The blood from Don's wound flowed over his fingers.
"Hang on man, I've got ya," he said, trying hard to keep the shake out of his voice.
Placing a supportive arm under Don's shoulders, Mikey began to half carry, half drag his brother back towards Raph and Leo.
…
The Foot Elite came to a halt before his master, offering the damaged blaster reverently. But a green foot slammed into the Elite's back knocking the blaster out of his hands. The weapon sparked and skittered across the floor before coming to a rest by the young turtles.
Angrily Shredder shoved his minion out of his way, bearing down on the young ninja. The older Leo whirled around, placing himself between the enemies and young turtles. His blades crossed in front of him ready to strike.
Splinter made it to the sides of his young sons taking in their injuries. Both Leo and Don were incapable of fighting, despite the purple turtle's efforts to rise on his own two legs.
"Raphael, Michelangelo, take care of your brothers." Splinter said. "I must assist your elder."
Donnie reached out clutching the old rat's robe. Turning back Splinter laid a hand on his young son.
"Be strong my son."
Donnie let the material slip from his fingers.
With that Splinter turned to help the older blue turtle, leaping forward taking the Shredder on himself, leaving Leo the two Foot Elite.
"Come on," Raph said. "We gotta get through the portal now!"
Gently lifting Leo, the red turtle shakily made his way towards the blue light. Crossing the threshold he found himself back in Don's lab, as if nothing had happened. He looked back and could see Mikey holding Donatello up.
They began their slow walk towards safety.
"STOP THEM YOU FOOLS!"
The Shredder had watched the first pair of turtles cross the barrier much to his fury. Currently engaged with Splinter his ire fell to his two minions.
Not wanting to disappoint their master, the Foot Elite both leapt towards the two young turtles. Mikey turned and screamed as a veil of red flew into the air.