Natalie Ruiz's enthusiasm for the Mini Cupcake Club ends up in her biting off more than she can chew. She's signed the club up for so many baking projects, how will they ever finish them all? And to make matters worse, her math-whiz twin sister Stephanie comes up with a solution to get all the cupcakes baked on time. Natalie wants to be happy that her twin saved the day--and closer to her in general--but can she be close to someone she secretly envies a little bit?