It is 1999, and sisters Angel and Rio are growing up fast. Angel is the spoilt stage school brat who is part of a chart-topping pop act, but longs for credibility. Rio is trying to forge her own way in the world, working for Morgan Collins, her film star aunt, as a nanny, and trying to avoid the wandering hands of Morgan's husband Jason.

Rio escapes to London, and while Angel is not pleased to be reunited with her half sister. Ellie, her mother, is delighted to see the girl she once looked upon like a daughter. She angers Angel by giving Rio a job at Titan Records, and Angel feels as though she is second best. Desperate to be taken seriously, she reinvents herself as a rock singer, succumbing to all the temptations that go with the territory. Rio fits into London life - finding love and stability for the first time. But when the worst terrorist event in living memory occurs, her seemingly happy life is torn to pieces.

With their lives littered with addictions, heartache and disappointment, will the estranged sisters ever put their differences aside, or will their dislike for one another turn into a deadly game of revenge?