A school girl gains self-confidence, new friends, and a cache of chic outfits when she becomes the computer-programming magical girl, Corrector Yui. She must stop the rogue A.I. Gurossa (Artificial Intelligence computer program) and his hench-programs from taking control of the global computer network. In this future, all human activity is supported by computers, so it's possible to control the world using the network.

Note: There are two manga versions of Corrector Yui. This one was written and drawn by original creator ASAMIYA Kia and was serialized in Ciao, by Shogakukan. The other was done by Shoujo artist OKAMOTO Keiko and was released by NHK Publishing in tankoubon volumes.