The popular girl, Eve, is having her 16th birthday slumber party when her best friend, attention hungry Chapin, arrives late and the party starts spinning out of control. Content to entertain themselves with facials and pedicures, tomboy Chapin suggests they play a game of dare called "Triple Dog." The rules are simple--everyone gets a dare and gives a dare. Fail to perform a dare, and your head is shaved. Whoever performs the best "Triple Dog Dare" by the end of the night wins cash and the ultimate respect from their peers. At first the dares are mostly embarrassing but soon they become more and more dangerous as Chapin challenges each girl to take greater risks, soon taking it way too far.