The sun had barely risen over the ruins of U.A. High School, casting long shadows over the once-proud campus. Izuku Midoriya stood at the edge of the shattered courtyard, his heart heavy with the weight of recent events. The world had been turned upside down in a single, devastating moment. The villain, known only as Null, had unleashed a Quirk that erased the abilities of every person on Earth. The chaos that followed was unimaginable.

Izuku clenched his fists, staring at the remnants of the training grounds where he and his classmates had once honed their skills. Now, they were just ordinary teenagers, stripped of the powers that had defined their lives. But Izuku had been Quirkless before, and he knew that heroism wasn't solely about having a Quirk. It was about heart, courage, and the will to protect others.

"Hey, Deku," a familiar voice called out. Izuku turned to see Katsuki Bakugo approaching, his expression a mix of frustration and determination. "You just gonna stand there all day, or are we gonna figure out how to kick some ass without our Quirks?"

Izuku managed a small smile. Even without his explosive powers, Bakugo's fiery spirit remained unchanged. "You're right, Kacchan. We can't afford to waste time. We need to find Null and stop him before he causes more damage."

Bakugo nodded, his eyes blazing with intensity. "Damn right. And we need to find others. We need a plan."

As they made their way through the crumbled hallways of U.A. High, they encountered Shoto Todoroki, who was staring at the broken statue of All Might.

"Todoroki," Izuku called out, "we need your help. We're going to stop Null."

Shoto turned, his expression stoic but his eyes filled with a quiet resolve. "Count me in. We may be powerless, but we still have our minds and our training."

Suddenly, the ground shook beneath their feet as a deafening explosion erupted nearby, sending a cloud of dust and debris into the air. Instinctively, Izuku, Bakugo, and Todoroki dropped to the ground, shielding their faces from the flying rubble. The shockwave reverberated through the ruins.

"Shit! What the hell was that?" Bakugo growled, his eyes scanning the area for the source of the blast.

Izuku's heart pounded in his chest as he pushed himself up, coughing from the dust. "We need to find out what's going on. There could be people in danger."

Todoroki nodded, his calm demeanor masking the urgency in his movements. "Let's move. Stay low and be careful."

The trio navigated through the wreckage, their senses heightened by the adrenaline coursing through their veins. As they approached the center of the explosion, they saw a group of people huddled together, some injured and others trying to help. The remnants of a building lay in ruins, smoke rising from the smoldering debris.

"Over here!" Izuku shouted, rushing to assist a woman trapped under a fallen beam. Bakugo and Todoroki quickly followed, their combined strength enough to lift the heavy debris and free her.

"Thank you," the woman gasped, her face pale with fear. "It was... it was an attack. A group of ex-villains. They said they were taking control of this area."

Bakugo's eyes narrowed, his anger barely contained. "Ex-villains, huh? Looks like we've got some scum to deal with."

Izuku helped the woman to her feet, his mind racing. "We need to get these people to safety first. Then we can deal with the villains."

Todoroki scanned the area. "There's an old shelter nearby. We can take them there and regroup."

As they led the survivors to the shelter, the reality of their situation sank in. Without their Quirks, they were vulnerable, but they couldn't afford to let fear paralyze them. Their resolve was tested, but their determination to protect others remained unshaken.

Once the survivors were safely inside the shelter, Izuku turned to his friends. "We need to find those ex-villains and stop them before they cause more harm."

Bakugo cracked his knuckles, a fierce grin on his face. "Let's show them what real heroes are made of, even without Quirks."