คุกเข่าเถอะ พวกที่แพ้! ย่าทวดอายุ 18 ปีของคุณเป็นเจ้าของมารยาทของคุณ!

70 years ago, Astrid, the mother of brain-computer interface, died in a fire to save her son. 70 years later, her consciousness downloads into the frail body of her 18-year-old great-granddaughter — doused in water, bullied, heart stops. When she opens her eyes again, the look in them has changed. A rock performance that stuns the stage. A classroom that destroys the top student. The campus bully great-grandson calls her "Great-Grandma" on the spot. Breaks into the manor. Cracks the security code. Sings a lullaby — her son, comatose for seventy years, wakes up. The scheming mistress is banished. The CEO great-grandson is forced to kneel. Allowance cut to zero. She brings them all in line. The 18-year-old body is weak. But the soul of Great-Grandma? She owns everyone's manners.