Hyperdimension Neptunia Victory is a Japanese role-playing game, co-developed by Compile Heart and Idea Factory for release on the Playstation 3. It is the third installment in the Hyperdimension Neptunia franchise and follows Neptune as she ventures through an alternate dimension set in 1989.
When an encounter with a strange girl called Rei Ryghts thrusts Neptune into an alternate dimension, she finds herself alone in a world where she is not the CPU of Planeptune and a naive girl named Plutia is. With Plutia and the alternate dimension version of her best buds: Noire, Blanc, and Vert, Neptune must fight the evil Seven Sages and find a way home. But just who is Rei Ryghts, and why does she want the destruction of all CPUs?