Synopsis:

Somewhere lurking in the forests of Souther California, there is an evil. An evil so powerful, it can take over minds. An evil so ruthless, it can posess the weak minded. An evil so messed up... it preys on women who are on their period. Unfortunately, five friends discovered this evil and "The 28th Day" is their story of how they dealt with the situtaion of having on of their friends possesed and starts to kill.

Experience Cassidy's (Niemah Fukudah) nightmares as the possession goes through her body, slowly taking control of it. Marvel in the clever way that she kills and how she gets a follower in Mike (Michael Raykiewitz). As each of his friends gets killed off, it's up to Tom (Aaron Powell) to save the day. Unfortunately he's a skinny little computer nerd with a love for cheesy horror movies.