Bake first. Bake hard. Have mercy! The hapless contestants dig deep to make colorful "Cobra Kai" soft pretzels and a Halloween dance fight cake.

Frosted creature faces and a cake conjured from the world of "The Witcher" beget wicked fails — just as the prophecy foretold.

Delightfully offbeat treats scream "Umbrella Academy," from a trio of Griddy's Doughnuts action figures to a towering Hazel and Cha-Cha cake.

The going gets gross — really gross — when the bakers tackle ooey, gooey carved pumpkins and an alien autopsy cake leaking edible slime.

Five fabulous "Nailed It!" fans visit the test kitchen for a challenge so extra, we had to make it a bonus episode.

'Tis the season to be scary when the bakers try their hands at holiday cookies before constructing an elaborate gingerbread house.

Two high-fashion challenges put the bakers' hopeless skills to the test: fondant-covered doll cakes and an edible headdress heaped with fruit.

Under the watchful eyes of an iconic cake designer, contestants decorate complicated cake pops and a bespectacled, three-tiered wedding cake.

The amateur bakers attempt to imitate the masters with gingerbread self-portraits and a sculpted cake replica of Michelangelo's David.

The bakers summon their not-so-super powers to make Marvel-themed cupcakes with detailed cookie toppers and a daunting "Black Panther" cake.

The contestants turn back time -- and mangle time management -- with inside-out Neanderthal cupcakes and a tropical-flavored T. rex cake.

The pressure's on to make perfectly puffed éclairs and a layered bust of Napoleon Bonaparte for not one but two esteemed French chefs.

The contestants face their fears (with very sharp knives) when they carve an animal out of a watermelon and bend cake into the shape of a snake.

What's scarier than a cook who can't read a recipe? A trio of creepy-crawly bug cookies and a terrifying clown cake that tastes like cotton candy.

Contestants loosen up a food scientist with a cupcake-cocktail pairing before serving him questionable slices of a bubbling volcano cake.

Dogged contestants are seeing double when they're asked to paint their portraits on a cookie before building an edible bust of Donald Trump.

The contestants raise the bar with two half-baked "high society" challenges: late-night munchie-inspired pancakes and a gravity-defying tea cake.

Two daunting desserts -- a chocolate-filled "hot tub" and an open-mouthed shark cake -- have the hapless home cooks struggling to stay afloat.

A YouTube star known for her fondant work watches the bakers try to copy two of her most popular Japanese-themed cakes.

The cooks divide and conquer to fill sections of a savory snack stadium before building a cake that looks like a barbecue grill.

Space-themed challenges throw the hapless bakers for a loop when they're asked to make cosmic cupcakes and a supersized solar system cake.

The bakers do their best to make jelly-filled doughnuts fit for a pirate before tackling an edible tower with a princess on top.

It's "happily ever after" or bust when the bakers try to make fairy tale cupcake pops, then stack cakes in the form of a majestic unicorn.

The bakers go for the gold — and miss masterfully — with sports-medal cookies and an elaborate swim cake that's topped with a waffle cone torch.

It's a Ferris wheel of fails as the teams make treats with a state-fair theme — from caramel corn knockdown-doll clowns to roller-coaster cakes.