Clara grew up next door with her childhood friend Ethan, but at 19, she suffered a severe mental trauma when her parents were suddenly killed in an accident, causing her to lose all her past memories. From then on, her personality became timid and reserved, and she ended up as an ordinary secretary. Over the next three years, she dated her boyfriend Noah, only to be constantly humiliated by his mother and repeatedly hurt in the relationship. Ethan is the true CEO of the Cole Group and was also that boy-next-door who was forcibly brought into a wealthy family back then. After recognizing Clara with amnesia, he transferred her to work as his personal secretary under the pretext of a job reassignment. While he appears strong and in control, he discreetly protects her, secretly pressures Noah out of the picture, and quietly watches over her without revealing his identity. When rumors of a substitute arise, and on the eve of Noah's wedding he's framed and Clara is driven to the brink, Ethan publicly reveals the truth behind protecting his amnesiac first love. Under Ethan's protection and guidance, Clara gradually becomes clear-headed and independent. She bravely breaks off her old relationship and starts shining in her career. As her memory pieces slowly come back, she finally remembers—the person who held her hand since childhood and saved her from a pool of blood in her darkest moments was always Ethan.
