TK had not marked the day on the calendar, because he had no idea that Thursday would change his life forever. It is not easy to have a secret relationship with Carlos Reyes, chief of interns and residents, and his direct boss. But Carlos likes the danger of being caught kissing in the hospital and making TK nervous. Nor does it make things better to have his father, the great chief of cardiology in the same hospital and spend the day calling each other Dr. Strand as if they were two strangers, let alone knowing that the hospital director doesn't like you, Billy Tyson is sure they are playing favorites with him because of the name he has, but he would never recognize something like that. His life and career at the hospital, however, can only get more interesting when Maddie arrives, a new intern, his new partner and apparently the older sister he's never met before.