You and your fiancee were driving in your car one night when you were attacked by two people wearing scary masks. They then raped your fiancee, and kill you... and needless to say, you're not happy. After the two thugs leave, taking your fiancee with them and leaving your dead body behind, your soul encounters the ghosts of 3 girls that have also died tragically at the hands of those 2 thugs. With their help, you manage to reanimate your dead body. Your primary goal as one of the walking dead is to rescue the person that you love from the bad guys, and take your revenge at the same time.

[edited from Anime Densetsu]