Trajectory's eyes were locked on Su Sheng. She didn't care who he was, what his intentions were, or why he had chosen her. The only thing that mattered was how she could keep this power. The Speed Force was addictive, and she wanted more.
"Follow me," Su Sheng said, grabbing her by the back of the neck and zipping back to the Disciple in an instant.
Caitlin Snow looked at Trajectory, who seemed completely bewildered. "Who is she?"
"An experiment," Su Sheng replied casually. "Do you still have more serum?"
"Yes."
"Inject her with another dose," Su Sheng ordered, waving Trajectory over. "You have one mission: upgrade this spaceship with nanoscale technology using the Speed Force!"
"And after that?" Trajectory asked, her voice tinged with desperation. "After I upgrade this ship, will I still have this speed?"
Su Sheng didn't answer. He simply opened the nanoscale formula and let her take a look while Caitlin monitored her physical condition to assess the serum's effects. Trajectory quickly absorbed the information and set to work, her yellow lightning flashing as she upgraded the Disciple at an incredible pace, seemingly tireless.
Caitlin frowned as she watched. "Something's not right. Her cells are rapidly deteriorating. If this continues, after two, maybe three more injections, she might..."
"We need to stop this," Caitlin said, her voice filled with concern.
"Keep researching and find a solution," Su Sheng instructed before dashing out of the Disciple to run in the villa's open space. Caitlin, anxious but determined, returned to her work while Trajectory continued her frantic upgrades.
When the serum's effects wore off and Trajectory returned for another injection, Caitlin sternly warned her, "You can't take another dose, or it will kill you."
Trajectory hesitated. She could feel something was wrong, but the thought of losing this power was unbearable. She couldn't go back to being the meek scientist she once was. With grim determination, she grabbed the syringe and injected herself before Caitlin could stop her.
The Speed Force surged through her again, and Trajectory started running. She was faster than ever before, pushing her limits. Caitlin's eyes widened in shock as she monitored the data—Trajectory's speed had already surpassed Barry's.
The yellow lightning surrounding Trajectory turned blue.
With a final, agonized scream, she pushed herself beyond her limits, and her body disintegrated into ashes.
"No!" Caitlin cried out in anguish.
Su Sheng returned to find Caitlin distraught. "She... she's dead," Caitlin said, her voice trembling with grief and anger.
"I saw," Su Sheng replied calmly. He had witnessed the entire process, from the change in Trajectory's lightning to her ultimate demise.
"How can you be so cold-blooded? That was an innocent life!" Caitlin shouted, enraged by Su Sheng's indifferent attitude.
"Have you thought of a solution?" Su Sheng asked, his tone steady.
Caitlin glared at him. "She's dead. Even if I find a solution, it's too late."
"Tell me the solution anyway," Su Sheng pressed, curious.
Caitlin sighed, struggling to compose herself. "The serum accelerates cellular decay, but the Speed Force can also accelerate cellular regeneration. For normal people, the rate of regeneration isn't fast enough to counteract the decay. If we could find a substance or cell type that can balance this, it might solve the problem."
"Hmm, I see..." Su Sheng mused, instantly thinking of someone. "Gideon, locate Vandal Savage in this timeline."
"He's just taken the Baton of the Sun God from the St. Mark's Museum," Gideon responded.
In a flash, Su Sheng vanished, running at full speed in the villa's yard. The Speed Force surged through every cell in his body, increasing his speed further.
Suddenly, a time wormhole appeared.
Su Sheng plunged into it, focusing the Speed Force energy at a specific point in time.
There was a silent explosion.
The time-space wormhole seemed to fracture at a node, and an exit appeared before him.
He shot through it.
Back at Mercury Labs, the wind blew through the laboratory, scattering papers everywhere.
"What a strong wind," Eliza Harmon muttered as she bent down to pick up a paper. When she straightened up, she saw Su Sheng standing there.
"Who are you?" she asked, dazed.
The scene was eerily familiar.
"It seems to have worked," Su Sheng noted. He had traveled through time but didn't see his past self, meaning his time-loop method had succeeded. By using the Speed Force to disrupt the continuity of time, he had overwritten the original timeline, ensuring his uniqueness and independence.
Smirking at the nervous and frightened Eliza, Su Sheng grabbed her and whisked her back to the Disciple.
"What... what is this?" Caitlin Snow stammered, looking at the newly captured Eliza Harmon, who was still in her white lab coat.
"The serum didn't work as expected. The Speed Force cells can't regenerate faster than they die. Study her cells to see if you can find a way to speed up regeneration. I'll find someone else," Su Sheng explained before disappearing again.
Eliza and Caitlin exchanged confused glances, neither sure of what to do next.
At St. Mark's Museum, Su Sheng arrived just as Vandal Savage was about to leave with the Baton of the Sun God.
Their eyes met, and Vandal Savage's face twisted in rage.
"It's you!" he roared. "I've been hunting you since 1986 when you ruined my plan to create Firestorm! Now I've finally found you!"
Su Sheng remembered taking the female Firestorm, Riley, and Valentina, destroying the Gulag camp, and killing Vandal Savage twice.
"God is fair. He gave you an ugly face, so he also gave you a low IQ to keep you coordinated," Su Sheng quipped with a chuckle. "I found you, not the other way around, you idiot!"