Naruto, Sasuke and Kakashi rushed to the hospital when they heard Sakura was back from her mission in Iwa. Kiba, Lee and Shino were also taken to the hospital but not as badly as Sakura.
Their mission was to take back a sacred scroll that Iwa had stolen from a neighbouring town. They were given orders to get that scroll back at all costs. They were also told that if it came down to it, they had to open it if it looked like the enemy could get their hands on it. When they had caught up with Iwa-nin, it turned out to be an ambush. Kiba and Akamaru were poisoned while Lee was engaged with three ninja and Shino, two. Sakura disposed of one hiding in the bushes before rushing to Kiba and Akamaru's aid. Once she was done, she found the scroll on the ground before reinforcements on the opposition showed up. Now they were outnumbered ten to three.
They fought hard but it wouldn't do. Sakura was cut down with a katana, slicing into her back but not before being horrifically burnt from not being fast enough to dodge a Katon jutsu and broken and a stab wound in the shoulder from dodging the wrong way of a kunai. Before she went down, she heard Shino's order to open the scroll. When she collapsed to the ground, she reached into her shirt and opened it. Her blood soaked into it before she was lost to imagineable pain.
It was Itachi's Anbu team that found them. When they got to the scene of the battle, everything was charred, like a massive bushfire took place. The weird thing was that the unconscious team were still intact as well as a bit of grass around them. The enemy ninja were either burnt to ashes or still solid but so burnt that they were unrecognisable.
Itachi, Shisui, Genma and Neji grabbed a member each and took off back towards Konoha.
Naruto, Sasuke and Kakashi weren't allowed in until Sakura was stablized. It took two hours to do so before they moved her into the same room as Kiba, Shino and Lee. They stayed by her bed and watched her heart monitor, afraid it'll cut out.
"What were you thinking, baa-chan!" Naruto yelled at Tsunade. "Sakura shouldn't be going on these kind of missions!"
"She's not strong enough," Sasuke added.
"Are you calling my student weak, brat?" Tsunade hissed. "Look, we received a message from a smaller village near here about the scroll. Action had to be taken immediately and it just so happened that Sakura and Shino were in my office at the time. They grabbed what ever ninja they came across on their way out which happened to be Kiba and Lee and they went."
"Hokage-sama," he murmured.
Tsunade turned to him.
"The...scroll..." he wheezed out.
"Tell me everything that happened," Tsunade ordered.
"When we were chasing after them, we were ambushed and Kiba was poisoned, along with Akamaru. Lee and myself fought off the ninja while Sakura tended to Kiba who looked almost dead."
Tsunade nodded. "Iwa has stepped up their game with poison," she admitted.
Shino nodded. "Sakura had taken out one of the ninja's and that ninja happened to hold the scroll. She took the scroll as we finished off the last of ninja before their reinforcements came back. We were easily taken down before I ordered Sakura to open the scroll but she had already gone down. I thought that was the end for us," Shino muttered.
"If that's true, how did you survive?" Tsunade asked.
"Sakura opened the scroll. I don't know how, with her injuries, but she did. Then she started screaming. Everyone turned to her and then she was up. She wasn't herself. Then everything around her went up in flames, everything but us. When the flames disappeared, no one was left standing but Sakura until she collapsed."
"So Sakura opened the scroll," Tsunade sighed. "I'll need to contact the town the scroll was from for more information on it."
"Do you know what was in it?" Kakashi asked when everyone but himself cleared.
"A demon."