Tess Miller, an MIT genius and tech partner, agrees to a $10-million-a-year contract marriage with Garrick Davenport—the head of a hundred-billion-dollar empire. Her sole mandate: take full control of his three notoriously rebellious, spoiled children. Instead of trying to win them over with meek affection, Tess launches a high-IQ, savage takeover. She conditions the chaotic youngest son, cuts off the predatory parasites preying on the teenage daughter, and intellectually crushes the arrogant eldest heir using advanced options hedging formulas scribbled on scratch paper. When the children’s glamorous ex-wife mother tries to swoop back in and reclaim her place, she discovers that her former children now loyally stand behind their fierce, unstoppable stepmother.