Fire chief Song Yan and emergency doctor Xu Qin were separated by family opposition when they were younger. Now ten years later, they meet again due to their professions. After experiencing life and death together, they manage to find their way back, working together and encouraging each other. They acknowledge each other's individual growth after years apart, but will they be able to overcome the obstacles in their path this time to stay together?

Twenty years after leaving her medical career, a housewife returns as a first-year resident — struggling to find her footing in a job full of surprises.

A fantasy medical drama about a high-ranking grim reaper named Kkok Du, who is the only being to exist in the underworld. Every 99 years, the cold and cruel Kkok Du must take a break from his job in the underworld and spend 49 days in the mortal realm—and this time, he winds up inhabiting the body of the human Do Jin Woo. While living as Do Jin Woo, he meets Han Gye Jeol, a female doctor who has the mysterious ability to order Kkok Du around.