In 1990, a new decade began and with it, the rise of a legendary R&B group. PD4, known as the bad girls of R&B, emerged as the third best-selling girl group of all time, only behind their competitor, TLC. With their soulful R&B vocals and the infusion of G-Funk sound from the West Coast, these four girls dominated the 90s. Meet Sasha Campbell, Chante Reyéz, Joiden Brooks, and Aziela Washington, and this is their remarkable story.