Mainline: a massive city known for its corruption and depravity. Walled off from the rest of the world, it is a place where the rich and powerful live lives of unparalleled luxury, all supported on the backs of millions of oppressed civilians. It is a place some believe to be hell on earth. The only things that count in Mainline are money and power, and stepping on the backs of others to get them is not only expected but encouraged.
Twenty year old Stella has found herself abandoned in the city with nothing to her name but her own wit. After two years trapped in the slums, she manages to flee her captors and is now closer than ever to escaping the city. All she needs is a ticket home.
Stella finds work at a café where she strives to earn enough money to make her way outside the city walls. While there, she meets people with dark pasts and darker secrets. Will Stella escape Mainline and claim her freedom, or will the city keep her trapped in its clutches?