Andie, an offbeat young woman, has always felt overshadowed by her seemingly perfect sister, Bianca, who is preparing for a picture-perfect wedding. After Andie humiliates Bianca at the rehearsal dinner, she discovers her sister is secretly struggling with her own insecurities and the pressure to appear flawless. This revelation brings the sisters closer, allowing Andie to help Bianca find the courage to embrace her true self as they head to the wedding united.