Brett Messerchmidt is planning Waverly Academy's annual holiday ball and gift exchange. But when some enterprising students decide that playing Secret Satan is infinitely more fun, the entire school starts acting naughty. Now all Brett wants for Christmas is a quiet holiday-and a kiss from a certain someone under the mistletoe. Too bad Callie Vernon has the same idea. Everybody at Waverly is getting into the giving spirit. The only present Tinsley Carmichael wants to unwrap this holiday is her new boyfriend, Julian McCafferty. But what happens when she uncovers a shady secret from his past instead? Santa knows when you've been bad or good... but what's the point of being good when being bad is so much fun?