Time Upheaval

Smoke drifted slowly over New York's ruins like thick black ink, while the remains of burning buildings still crackled and popped.

The Avengers and their companions from Midtown High School sat sprawled amid the rubble, every one of them covered in wounds, yet unable to hide the relief of having survived. Wanda knelt on one knee, Scarlet Magic flickering at her fingertips like a dying candle in the wind. Her pale face was streaked with sweat and dust, and every breath sent a sharp pain through her chest. Thor leaned on Mjolnir, his chest heaving violently as lightning flickered around him, as though even it was catching its breath after the brutal battle.

"We... did it." Steve Rogers's voice was hoarse. His shield was covered in scorched marks and cracks. He slowly removed his helmet, revealing a weary but relieved smile. Gwen's hand still trembled as she held up her livestreaming device, its camera recording the devastation. Choking back sobs, she reported to the world, "The heroes succeeded! New York is safe for now!" The livestream chat was instantly flooded with cheers and gratitude, but no one noticed the strange blue light beginning to flicker deep within the ruins.

Tony Stark dragged his damaged armor over to Li Stark and patted his nephew on the shoulder. Though his tone remained as sharp-tongued as ever, "Kid, your performance barely passed this time," the tremor in his voice exposed the lingering fear in his heart. Li Stark forced out a weak smile as memories of his past life surged over him like a tide. In his original world, he had watched Marvel films and shows countless times and knew the Time Variance Authority's story inside and out. Those mysterious black-clad agents who controlled time were about to appear in reality. He had just opened his mouth to warn his uncle of the hidden danger when the world suddenly spun around him. A piercing buzz filled the air, exactly like the sound from the shows, as though spacetime itself had been torn open.

"That sound..." Li Stark's pupils contracted, and his face turned deathly pale. He clearly remembered the Time Variance Authority's debut in the show, but facing it for real brought an oppressive force far beyond anything he had imagined. He had fantasized countless times about changing the course of the story, yet his weakened body left him helpless. He looked at Tony, opened his mouth, and finally only whispered, "Uncle, be careful..."

"What is that sound?" Ashley tightened her grip on the device in her hand. The data on its screen began jumping wildly as alarms blared one after another. A massive golden ring appeared in the sky, and a group of people clad in black uniforms and wearing mysterious badges stepped out from it. They held strange devices that emitted a deep blue glow—Time Variance Authority agents.

"Time criminal Amora, you have severely disrupted the stability of the timeline." The lead agent's voice was cold and utterly emotionless. He aimed his device at Amora, and an energy beam shot out, trapping her before she could react. Amora struggled in terror, purple magic lashing wildly against the beam's restraints. "Who are you people? Let me go!"

Before Li Stark could think of how to respond, another energy beam suddenly shot toward him. He instinctively tried to dodge, but his body was uncontrollably pulled toward the ring. "No!" he shouted, throwing Tony a pleading look. "Uncle! They're the TVA! The Time Variance Authority! I previously..." Before he could finish, images from his past life flashed through his mind—images of the TVA's overwhelming power—and his body was swept into the ring.

Tony Stark's eyes went bloodshot as he immediately activated his armor's weapons. "Let him go! You bastards!" But before he could attack, another Time Variance Authority agent waved a hand, and a barrier blocked his assault.

"Li Stark, your actions in this incident caused abnormal fluctuations in a timeline branch. You are now being detained." The agent's voice remained cold, as though this were merely routine procedure. As the ring slowly closed, Amora and Li Stark gradually vanished before everyone's eyes. Gwen's livestream camera captured the entire bizarre scene, plunging viewers around the world into shock and confusion.

"We'll find you!" Tony Stark roared at the vanished ring. His armor's energy cannons were still charging, but his eyes were filled with a panic and helplessness he had never known before.

Inside the Time Variance Authority, cold light gleamed from the metal walls, while the harsh white lights overhead stretched Li Stark's shadow long across the floor. He sat quietly in the corner of his cell. Unlike Amora, he did not struggle wildly or shout demands. He simply watched the Time Variance Authority agent entering the room with deep, unreadable eyes. He knew the TVA was merely a puppet of the Time-Keepers, with an even greater conspiracy hidden behind it.

"Your so-called preservation of the timeline is nothing more than a cover for some unspeakable purpose." Li Stark's voice was calm and steady. "Does Mobius know the truth? Or is he just another piece on your chessboard?" The agent froze for a moment, clearly not expecting this captured "time criminal" to know so much about the Time Variance Authority.

After the battle in New York, Tony Stark locked himself in the laboratory and worked without sleep. Obscure data and mysterious symbols flashed constantly across the holographic screens. He frantically searched through information, trying to find a clue that could lead him to Li Stark. Restlessly pacing the laboratory, he occasionally slammed a fist against the console. When Helen Cho received the news, the hand holding her phone trembled faintly. Li Stark's figure kept flashing through her mind—the young man who always wore a confident smile, whose eyes held wisdom that did not belong to this era. She did not even bother changing out of her nightgown. Throwing on a lab coat, she rushed out of her home as memories replayed through her mind like a carousel.

The laboratory door was shoved open. The hem of Helen Cho's lab coat swayed with her hurried steps, and fine beads of sweat still clung to her forehead. She had clearly run all the way there. "Tony, I brought a new discovery." Helen Cho pushed up her glasses, trying to hide the anxiety in her eyes, but the slight tremor in her voice gave her away. Without even pausing to catch her breath, she handed Tony the tablet in her hands. It displayed data from her overnight analysis of Time Variance Authority energy fluctuations, surrounded by dense handwritten annotations and formula derivations.

"These energy traces are very unusual. They resemble the quantum entanglement-state energy fluctuations I studied before, but there are also obvious differences." She pointed to a constantly flashing curve on the screen, her voice trembling slightly with excitement. "By comparing the residual energy reactions from the Battle of New York, I discovered that the spatial tearing fluctuations produced when the TVA appeared leave behind a specific resonance frequency at the quantum level." As she spoke, her gaze unconsciously fell upon Li Stark's usual workbench in the corner of the laboratory. His uncollected parts and blueprints still lay there, and her eyes gradually reddened.

Tony's eyes lit up at once. He leaned closer to the tablet, studying the data carefully as his fingers unconsciously stroked his chin. "Go on!" he urged, his voice full of anticipation.

Helen Cho took a deep breath and brought up another set of data. "I believe that if we can capture the harmonics of this resonance frequency, we may be able to trace the TVA's location in reverse. But the difficulty is that these harmonics are extremely weak and decay rapidly over time." She frowned, worry flashing through her eyes. "I've already deployed quantum energy detectors throughout the city, but the data we've collected is still far from enough. We need more computing power and more precise instruments." Her voice tightened as she spoke, afraid that her own limitations would cost them their chance to rescue Li Stark.

Tony patted Helen Cho on the shoulder. "I should've come to you sooner! J.A.R.V.I.S., activate all backup servers and push the lab's computing power to maximum!" He turned toward a nearby workbench and began dismantling a component. "We can modify the existing particle collider and use it to improve our signal-capture capability."

The two immediately threw themselves into intense research. The laboratory was filled from time to time with the clatter of tools and the hum of equipment. As Helen Cho calibrated the instruments, she murmured, "If we can decode the energy profile of the TVA's transport device, perhaps we can develop an interference signal and stop them from taking people whenever they want." Her eyes were firm. There was only one thought in her heart: bring Li Stark back as soon as possible. Whenever an instrument malfunctioned, her eyes would grow wet with anxiety, terrified of wasting even a second. Beside her, Tony rapidly wrote code, occasionally teasing, "Doctor, once this is over, I'm giving you a 'Best Rescue Partner' trophy." Helen Cho only managed a faint smile. All her thoughts were fixed on finding clues to Li Stark's whereabouts.

The laboratory lights remained on through the night. When Helen Cho grew so exhausted that she dozed against her chair, her dreams were filled with images of Li Stark trapped somewhere beyond her reach. She jolted awake and immediately returned to her work. This operation, led by Tony Stark and Dr. Helen Cho to uncover the Time Variance Authority's secrets and rescue Li Stark, carried Helen Cho's deep concern and worry.