Lana (Hazel Moore) is celebrating her 19th birthday, so she has invited over her friends Christie (Hailey Rose) and Chloe (Liz Jordan) for a slumber party. Lana's stepfather Greg (Seth Gamble) promises to watch over the three girls and keep them out of trouble, especially since Lana's other parent (Lexi Luna) will have to miss the party due to a last minute shift change at work. However, Greg's intentions towards two of the girls are less than pure, and he knows that his stepson Ethan (Nick Strokes) has strong desires for the third girl. As Greg hatches his scheme with help from Ethan, the birthday girl learns disturbing truths about the people she thought she knew... and by the time the party's over, nothing will ever be the same again.