

Cleaner Betty’s night shift takes a fateful turn: she rescues a drugged stranger—unaware he’s elite tycoon Eli—and they share an impulsive night. The next morning, she slips away to help her best friend Ivy out of a crisis, , leaving Eli desperate to find her. Seizing the chance, Ivy poses as Eli’s mystery woman, lying outright that her ex-husband’s child is his—and steals Betty’s place entirely. Betty discovers she’s pregnant soon after starting medical school, raising the baby alone. Six years later, she becomes Eli’s household private physician. From their first meeting, Eli can’t shake the mother-daughter pair’s uncanny familiarity—a connection that makes him question everything…

Ordinary office worker Milo Reed accidentally saves CEO Avery Stark—and they swap their sensory systems. Avery smells a foul stench from her porridge, while Milo smells seafood in the bathroom. Milo rides his motorcycle through freezing wind without feeling cold, while Avery shivers in her luxury car. One day, Avery locks him in her office, grabs his tie, and asks, “Have you noticed anything… different about your body?”