Synopsis：In 1955, genius mathematician Ava dies in a car crash while shielding her young son. The very next moment, she opens her eyes in the body of an eighteen-year-old girl—only to discover it’s now 2025, seventy years later. Her little boy has become the elderly head of the Windsor family, and his stunned grandsons must accept the shocking truth: their new great-grandmother is a teenager. Ava doesn’t hesitate—she unmasks schemes, tames rebellious heirs, and drags the chaotic Windsors back into line.