Someone will be lost.

NOOOOO!

“Gothi says,” said Gobber, watching carefully as Gothi traced more patterns into the sand. “That the only cure for Scauldron venom poisoning is the seed of a purple flower that grows on the smallest island to the south of Berk.”
“But the South is where Savage is!” said Mom.
“I don't care,” I said, a determined look on my face. “I'm saving my village!” I mounted Toothless and was about to go, but Mom grabbed my arm.
“Then I'm coming with you.”

I gulped as jagged rocks started appearing in the sea below us. This meant we were close to Savage's island.
Sensing my nervousness, Toothless lifted up his head and licked my hand. I scratched his head, grateful that he was here.
We finally found a tiny island, barely half the size of the village on Berk, that looked like it could easily be the smallest. We landed in a forest clearing and looked round cautiously. It was suspiciously quiet, so Toothless and Cloudjumper were immediately on their guard.
After wandering round the forest for a bit, I finally caught a glimpse of something behind a bush. I went to look and saw a single purple flower, blooming despite the cold weather of the archipelago. I quickly dug it up and put it in Mom's bag, hoping that the seed came with it. It wouldn't be enough to cure the whole island, but it was something to bring back, at least.
Suddenly, the sound of an arrow whizzing through the air was heard, followed by a shout of pain from Mom.
“Mom!” I yelled, and quickly ran towards her. She was kneeling on the ground, an arrow stuck deeply in her calf. “Are you okay?”
“I'm fine, I'm fine... HICCUP, LOOK OUT!” She pointed behind me and I turned round just in time, as a man wearing an iron mask, like a simplified version of Savage's, was charging towards me, holding an axe over his head. I quickly pulled out Inferno and stopped it as it came plummeting down towards my chest. I managed to disarm the man, and then Toothless knocked him out with a quick plasma blast.
“Mom, get back to Cloudjumper!” I yelled, as at least five other men came charging from the trees. “Toothless and I will hold them off!”
She nodded and limped over to Cloudjumper, who was dealing with his own group of soldiers. The Stormcutter, seeing that his beloved rider was injured, roared with fury and blasted his remaining group of soldiers to Hel with one powerful stream of fire. He quickly grabbed her in his claws and tossed her as gently as he could on to his back, and took off towards the sky, but didn't go towards Berk. Instead, he hovered in place, waiting for me and Toothless to follow.
But Toothless and I were a bit busy. Men were coming from each side of us, and we didn't have enough room to take off, so we had to remain on the ground and survive for as long as we could. After a while we became separated, each having our own group of soldiers to deal with.
All of a sudden, a dart hit Toothless in the neck, causing him to roar in pain and fall unconscious on the floor.
“Toothless!” I rushed to him and quickly pulled the dart out, but it was too late, he was already unconscious.
I tried desperately to wake him, but then it was my turn to be shot. An arrow whizzed through the air and hit me clean in the shoulder, making me yell in pain just like he did.
“Hiccup, we need to go!” yelled Mom from above me.
“No, I'm not leaving without Toothless!” I shouted stubbornly, standing my ground next to my best friend, despite the searing pain in my right shoulder.
“We'll all get captured, he wouldn't want that! We have to go NOW!” Arrows started being shot at Cloudjumper too, but he swiftly dodged them. It was unsure how long he could keep this up, though.
I still stood my ground, so Cloudjumper swooped down and grabbed me in his claws, lifting me off the island.
“TOOTHLESS!” I yelled desperately as the remaining soldiers surrounded him and covered him with a net. I could only watch as they dragged his sleeping body into the darkness of the trees.
He had fought beside me, but in the end, I hadn't been there to defend him.

round: remember it should be around, or 'round, otherwise it means like "a circle is round".

Suggestion: ... I rushed to him and quickly pulled the dart out, but it was too late, he was already unconscious.... instead of ...but it was too late, he... try ...but it was too late; he...