[Updated every Wednesday] Do-hee is a career woman working as a VIP concierge at the Hotel Yusung Palace. One day, an unexpected figure is appointed as the new general manager. It is Cha Moon-ho, her first love and her brother's friend, who colored her nineteenth summer—a time that was nearly crushed by misfortune—with the vibrant hue of red plums. Ten years after he suddenly vanished without a trace, he has returned as her boss. “You used to be so innocent; how did you become so bold?” In the heat of the returning summer, she finds herself thinking the exact same thing about him. As for you, how did you become so... sexy?