大嫌いな転校生が、今日から兄になりました

Greer Vanderbilt, Kingsley Academy's spoiled heiress and cheerleading star, seduces her nemesis Sloane's boyfriend to seize the cheer captain title — only to be stopped by Dorian Ashford, a dangerous transfer student. That night, her father introduces Dorian as her future "brother." Greer schemes to drive him out; Dorian strikes back harder. Amid their clashes, an irrepressible attraction forms — but Dorian harbors a secret: he believes Frederick abandoned him and his mother, and came to destroy Greer as revenge. When assassins nearly kill Greer, Dorian saves her. Yet he still allies with Sloane to strip Greer of her position. Sloane's jealousy spirals — rigged stage lights, leaked photos — until Dorian's revenge plan is exposed, and Greer's trust shatters. Frederick stages Greer's fake death and sends her abroad. A paternity test reveals Dorian and Greer share no blood. A year later, he finds her overseas and promises to spend his life making it up to her.