Life is but a dream. Or is it? How do you know if you are awake, or just dreaming that you are awake? This may sound like a silly question — unless you are a student at Tomobiki High School. Something strange, stranger than usual, is happening at Tomobiki High School, but with wacky classmates like Lum (a beautiful alien princess with a "shocking" personality), Ataru (the lecherous loser she loves), and Mendou (the suave scion of the wealthiest family on Earth), anything can happen! When Ataru, Lum, Mendou, and the rest of the gang discover that they have been reliving the day before the School Festival over and over again, they may be confused, but they are not suprised! But things are getting worse, and if they do not find a way to break the chain, they will be trapped in a time loop forever.