In the early1980s, The Diamonds - Ireland's trailblazing all-woman rock band - were on the brink of international success. Their debut single 'Too Much Note Enough' was soaring in the British charts. Then, as suddenly they'd arrived, they vanished. It was the last anyone would hear of songwriter, guitarist and legend-in-the-making Birdy Troy.
 
Stacey Nash, host of the popular podcast 'Whatever Happened To...?', becomes fascinated with the band that broke up before she was born. How could four young women with so much promise just disappear?
 
As problems mount in her own life, Stacey is drawn deeper into unravelling the mystery. But, after forty years, and with the band's members reluctant to cooperate, is it too late for the truth to emerge?