Yoo-Eun wakes up to realize she's trapped in a game with no way out or possessions. Her only talent is creating fashion designs. While struggling to survive, she discovers Sheldon Street's shop and encounters a curious nobleman, Ashton, who implores for her help. Yoo-Eun is doubtful of his motives and wonders if they are sincere or dubious.
The depressed salary man experiences a significant decline in his spirits, particularly on Mondays. However, his life takes an unexpected turn when he encounters Ai-chan, a well-endowed high school girl who accidentally bumps her bust into his face. This incident creates a unique bond between them.