Cinderella Four

The mayor of Hong Kong, caught between the two warring powers, orders the Audomura to leave before the city loses its neutrality.
Camille sneaks away to look for Four, who now carries a Titan homing device. Camille and Four are attracted by their Newtype affinity. Four has no memory of her life before the enhancement treatment at the Institute, where she was the fourth subject: Murasame #4 (MRX-004).
Wooda attacks Hong Kong in Psycho Gundam, but lacks the Newtype power to control it properly. Amuro takes the Mark-II against it, but Psycho Gundam simply can't be stopped with physical force. Four is attuned to Psycho Gundam and uses her power to regain control of it while Amuro picks up Camille.
As Camille drops Amuro off and takes over the Mark-II, Four realizes that he is the Enemy she's been seeking. She is confused by her affinity with Camille, which she tries to reject, and memories of her former life, which return in painful flashes.
Camille tries to talk her out of it, but Four is maddened by her inner conflicts and attacks with increasing savagery until Amuro gets Camille to retreat. The battle ends in a draw.
The Audomura leaves Hong Kong to prevent any more attacks on the city.