Their lives had no intersection, but due to an unexpected conflict, they faced off at Xinghua High School. When a storm involving the chaebol's shady affairs suddenly came, they discovered that their enemies were highly overlapping. Should they continue to violence against each other, or should they temporarily put away their edge and use their own strategies and methods to form a secret alliance? In the whirlpool of interests and the edge of human nature, two girls who were mortal enemies finally chose to walk side by side on the same road full of thorns. Their cooperation has nothing to do with trust, but only survival and revenge - using the sharpest calculations to fight against the greatest darkness.