In 1955, Professor Reese dies unexpectedly—only to wake up 70 years later in the body of an 18-year-old high school girl. Now, her son is a 70-something chairman, and she has several handsome great-grandsons. As Reese adapts to her new life, she uses her wisdom to discipline these unfilial great-grandsons—all while finding true happiness in this brand-new era.