Don't Fool Her! She's a Genius Heiress! — Episode 15

21-year-old Isabella Patton, raised in the countryside, returns to her wealthy biological family. She meets the charismatic and much older Oliver Bates, who pursues her unaware she is his fiancée. Meanwhile, her cousin Eliza, raised in her place, plots to turn the family against Isabella. But Isabella is a medical and tech genius who outsmarts Eliza at every turn. As her skills emerge, she gains the support of her five brothers and parents, becoming the family's star while keeping Oliver at a distance.