Three soulful sisters rise out of Harlem to become music's hottest singing group in this rags-to-riches tale of glitz, glamour and the high price of fame. Against the vibrant grooves of Curtis Mayfield, these divas explode onto the scene with off-the-hook harmonies and a sexy style, catapulting them to superstardom – but not every fairy tale has a happy ending. When success leads to excess, one sister's star will fade, while another's will sparkle.