Malik, Ilir, Betim, and Shqiprim sat in Malik's cozy attic, surrounded by books and curious trinkets. The wooden ladder creaked as they gathered around a large, unfolded map of their city. "We can't let them take over our city!" Malik exclaimed, his eyes flashing with determination. Ilir frowned, scratching his chin. "We need to do something, but what can we do?" His friends nodded vigorously, eager to defend their home. Betim, being the math whiz, started calculating the distances between the city's landmarks and potential threat zones. "If we create a grid system, we can pinpoint the most vulnerable areas," he explained, drawing lines and circles on the map. Shqiprim, the group's art enthusiast, began sketching a detailed portrait of their city, highlighting the most important buildings and monuments. "We must protect our cultural heritage!" she declared. As they brainstormed, the friends realized that they needed to understand the concept of scale to defend their city effectively. Malik pulled out a small globe, and Ilir measured the distances between cities using a measuring tape. "The scale of our city's map is 1:10,000," Ilir announced, "so we can use that to our advantage." With their combined skills, the friends concocted a brilliant plan to defend their city against the Serbian criminals. They were ready to take action, armed with math, art, and determination.

The sun was setting over the hills as Betim, Shqiprim, and their friends prepared for the battle of their lives. They had been tracking the Serbian criminals for days, and finally, they had them right where they wanted them. But as they looked out at the enemy's army, they realized they were outnumbered and outgunned. "This is not good," Betim whispered, his brow furrowed with worry. "We can't hold out for much longer, we need to think of something fast." Shqiprim, who was busy loading his catapult, looked up at his friend. "I think I heard the Americans are sending troops to help us," he said, a glimmer of hope in his eyes. Just then, a loud boom echoed through the valley. The battle had begun. The friends stood strong, using their math skills to calculate the perfect angle for their catapults and their knowledge of science to create a smoke bomb that would disorient the enemy. But despite their best efforts, they were still no match for the criminals' superior numbers. Suddenly, a loud rumbling sound filled the air. The ground began to shake, and the friends looked up to see a fleet of hot air balloons descending from the sky. They were adorned with the American flag, and a banner that read "Help Has Arrived!"

The sun was setting over the deserted streets of Kosovo, casting a golden glow over the abandoned buildings. Malik, Ilir, and their friends huddled together, waiting anxiously for the US Army to arrive. The sound of gunfire and explosions echoed through the streets, as they fought off the Serbian criminals who refused to give up. "It feels like it's taking forever for the Americans to arrive," Malik said, his voice laced with frustration. "We just have to hang in there, they'll be here soon," Ilir replied, his eyes fixed on the horizon. Suddenly, a messenger arrived, out of breath and trembling. "The US Army is on its way!" he exclaimed. "They'll be here within the hour!" The friends cheered, their tired faces lifted with hope. Ilir pulled out a worn-out map, studying it intently. "We need to hold our positions until they arrive," he said, his finger tracing the streets. "We can't let the criminals take over." Malik nodded, his eyes scanning the rooftops. "I'll get the others in position. We'll hold out until the Americans arrive." As they readied themselves for the final push, a burst of gunfire erupted from the nearby alleyway. The friends exchanged nervous glances, their hearts racing with anticipation. The wait was almost over.

As the sun began to set on the besieged city, the sound of rumbling engines and marching boots echoed through the streets. The friends, exhausted and outnumbered, looked up to see the US Army arriving on the scene. Tanks rolled in, followed by soldiers in camouflage uniforms, their eyes fixed on the Serbian criminals. "We're here to help, let's take back your city!" shouted the US Army Captain, her voice loud and clear. Betim, relief washing over his face, grasped the Captain's hand. "Thank you, we were outnumbered and outgunned." Together, the friends and the US Army charged into battle. The Serbian criminals, caught off guard, stumbled backward as the combined forces pushed forward. Bullets whizzed past, but the friends and the US Army worked in perfect sync, taking cover behind buildings and returning fire. As the fight raged on, Ava used her knowledge of geometry to calculate the best angles of attack, while Sam used his understanding of friction to slip behind enemy lines undetected. Leila, meanwhile, used her artistic skills to create a makeshift flag, waving it high to signal their progress. With every step forward, the friends and the US Army gained ground. The Serbian criminals, realizing they were outmatched, began to retreat. The friends cheered as the city began to breathe a sigh of relief. They had done it – they had saved their home!

The sun was shining brightly as the friends and the US Army gathered in the city square. There were balloons, streamers, and a big banner that read "Congratulations!" in bold letters. Shqiprim, Malik, and the rest of the friends were beaming with pride, still in their superhero costumes. The US Army soldiers were all smiles, shaking hands and patting the friends on the back. "We did it, we saved our city!" Shqiprim exclaimed, pumping his fist in the air. The crowd erupted in cheers and applause. Malik nodded in agreement. "We couldn't have done it without the American's help," he said, turning to the soldiers. "You guys were amazing!" Just then, a soldier walked up to them, carrying a big tray of cupcakes. "Hey, kids! We heard you like math and science, so we got you some special cupcakes with math problems on them!" The friends' eyes widened as they took in the delicious treats. There were cupcakes with geometry shapes on them, others with multiplication tables, and some with diagrams of the water cycle. The friends dug in, enjoying their sweet treats while discussing the math and science behind them. As they celebrated, the friends couldn't help but think about all they had learned on their adventure. They had used science to create their superheroes, math to solve puzzles, and art to design their costumes. It was a victory not just for their city, but for the power of learning and teamwork.