At the age of eighteen, everyone's blood changes colour. Whether it becomes blue, green or otherwise, the colour is either hereditary or a random, biological selection. However, when Pearl Damocles discovers that her blood is colourless - in a society where people are segregated by blood colour -, she travels to an institute for people like her with a handsome yet mysterious man named, Malik Ahmed. After months of training and planning - with a team of quirky, newfound friends and trained militants by her side - she decides begins to hatch a plan. One to bring everyone together, and abolish the inequality of the blood colours.

Lexi Grayson is a normal teenager, as normal as she can be with her unobserving skills and her overthinking mind. But she might need the overthinking if she wants to unravel the smirking mystery that is Blake Eaton.