A local fireman asks for baking lessons leading to a sister vs. sister bake-off at the firehouse. Meanwhile, a picky customer sends back cupcakes for her daughter's Sweet 16 party, leaving the sisters to scramble to redo them all.

Sophie and Katherine build a giant nine-foot glow-in-the-dark guitar for a super sweet sixteen party, while Andres and Mommy bake pizza cupcakes to go with it.

Sophie and Katherine must juggle two major cupcake orders this week - one for a birthday party at the National Zoo. But to add to their chaos, the sisters must first clean and sanitized their kitchen before they can even start.