부자 vs 빈털터리 vs 초부잣집 딸! 누가 최고인가?

BB (poor), Hannah (rich), and Mia (ultra-rich) are close friends who all share a passion for mermaid outfits. When their teacher announces a mermaid-themed Dressup Contest, the three girls eagerly sign up to participate. In the contest room, BB, Hannah, and Mia get straight to work, crafting their own mermaid costumes in three respective styles: poor, rich, and ultra-rich. During the design process, Hannah runs into an unexpected clothing mishap, but BB and Mia quickly set aside the competition to give her a helping hand. Thanks to their strong teamwork and beautiful creations, all three girls deliver outstanding designs and rightfully win the first prize together.