Riku Mizusawa is 46 years old. Her beauty exudes a subtle sexiness even in her clean and elegant appearance. She is a genuine former cabin attendant who has worked for a major airline. 18 years ago, she met her husband, who was a top trading company employee at the time, on the same flight as Riku on a business trip, and after getting married and giving birth, she decided to become a housewife. Since then, she has raised two boys and has lived a smooth sailing life. However, even this successful wife has a secret that she cannot tell anyone. "I'm too embarrassed to tell anyone, but I actually love watching adultery videos." A casual sex with a man she met for the first time, a male-female relationship where they indulge in pleasure through self-indulgence. And a sense of immorality that her husband must not know... Her yearning for adultery sex, which grows day by day, finally makes her cross the line. A direct flight to pleasure and infidelity with no U-turns allowed, is about to take off!