This is just a short prologue to tell you why the rest is happening. You'll have to make up the beginning yourself. Happy reading!
Ash tried to push past James and his Arbok to the screen where Misty's face was showing. Jessie stood beside the screen, her finger wavering over a red button.
"That's right, twerp. I press this button and your precious Misty blows up, thanks to the grenade we attached to her pokemon belt.
"What do you want? Please, I'll do anything, just don't kill Misty!" Ash cried.
"Yes, you will. I want two things." Jessie exclaimed. "First: I want Pikachu!"
"NO!"
Jessie's finger touched the button, but didn't press it. James made an exploding sound behind Ash.
"A-alright. But you have to promise not to hurt him."
"But of course. And second: You must be my slave for the rest of your life. You will completely surrender your free will to me. Or, I could just press this button, then kill you and take Pikachu. Your choice."
"O-okay. Just let Misty live.