Jang Saerin, an unbothered quiet woman, believed that after her hand was stabbed during an incident, her life had come to an end. She was someone who loved her career but lost it because of the incident. After two years of hand therapy, her career as a Thoracic Surgeon came to an end as a result of the incident, forcing her to transfer to the emergency department. Dr. Cha Myungho, one of the nerdy good-looking doctors, captured her heart. she had no idea how to love or how to care for someone correctly. Until the 'Hot-shot' doctor, Dr. Yang Jungwon, appeared in to teach her how to love by observing daily occurrences all around in the ER ward Dr. Yang Jungwon had countless women clamoring for his attention, but he never desired any of them since he instantly fell in love with Dr. Jang at first sight. Will he be able to change her Dr Jang's heart in time or will Dr Jang confessed her love to Dr Cha. Don't forget to keep yourself updated to find more about the ER teams love story!