Ask any high school senior and they'll tell you that prom night is the most important night of their lives. But thanks to Julian -- an evil alien warlord from Rangor posing as an ordinary high school student - prom night has turned into an absolute disaster. And it's all thanks to Becca. An innocent, college-bound kid, who made the colossally bad decision to ask Julian to the prom. Now Julian has the senior class right where we wants them -- all in one spot so he and his henchmen can bring them to his planet to be his servants for the rest of their lives.
It's a fight to the finish as Becca and her friends try to save themselves from a horrible existence and -- more importantly -- save the prom!