It was a time of drinking too much and staying out all night. Of boozy al fresco dinners, sneaking into private clubs and midnight strolls on Hampstead Heath. It was a time of friendship, of falling in love and being young.

A time when you felt that anything could happen. But the party can't last forever, and for Joni and her friends, sunrise promises something darker than any of them could have imagined, as they face the one undeniable truth: it's not if the party ends; it's how.