she sends a note in a bottle to sora.
it gets intercepted by the XIII order, they find out her whereabouts.
she leaves destiny islands (how? who knows.. maybe by a raft!)
she goes to twilight town, finds roxas's friends.
axel goes to twilight town to kidnap her.
she's thrown in jail, with pluto.
in jail she does crunches and push-ups and gets her ass into shape.
she boxes the walls and even wrestles with pluto to get in the fighting mood.
she breaks away from the jail, jumps down onto the platform, and goes to fight in the BATTLE towards the end.
there, by the time she has reached sora, the battle is halfway over and riku is just about to sacrafice himself to save sora and kairi..
-heartbreaking ending- ..in words of nomura.
well.. thats my kairi plot.