Yoo Bang’s only dream is to fulfill his father’s wish by landing a job at the prestigious Chunha Medical Group, but after endless failed interviews, hope seems lost. One day, a mysterious offer from the chairman’s son pulls him into a dangerous game: infiltrate the company and steal confidential data about their new experimental drug. Eager and desperate, Yoo Bang even volunteers for the risky clinical trial himself—unaware he’s not the only spy with a hidden agenda. From being falsely accused of murder to suffering wild side effects from the medication, Yoo Bang’s journey to becoming a real salaryman is nothing short of outrageous. Against all odds, he rises to lead the company and wins the heart of the fiery “princess” who’s been by his side through it all. Along the way, he discovers not just success and youth, but a life worth fighting for.