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After learning the basics of stacking and frosting, the contestants make two-sided cakes that are full of surprises.

The bakers give grocery store sheet cakes a "cakeover," then apply what they've learned to a not-so-classic fruitcake. Guest judge: Vanessa Bayer.

The brave contenders face their fears by covering everyday objects in fondant, followed by a terrifying Big Cake Bake.

The pressure's on when the contestants use piping bags to create a cupcake garden, then serve up a circus-themed big top cake — with a big, big twist.

A colossal bake involving stacked cakes and cookies is a balancing act that takes skill — and serious teamwork. Guest judge: Bobby Moynihan.

Armed with airbrushes, the remaining bakers attempt a beach-themed pull-apart cupcake cake and an ambitious edible rocket. Guest judge: London Hughes.

The contestants add advanced techniques to their skill sets with 3D frosted roller skates and amazing anti-gravity bakes.

The bakers learn the art of chocolate from a "Nailed It!" legend, then pour what they know into a chocolatey cake tower.

To win a spot in the finals, the last three bakers standing must prove that they've learned from their mistakes.

The top two bakers get 12 hours to impress a panel of experts with their artistry. But who will claim the sweet cash prize?