The Mysterious Savior

S1, E1: Things aren't going great for Gye Jeol. She gets fired at the hospital she is doing her fellowship and nearly falls when a mysterious man saves her. She falls for him the minute she lays eyes on him, but then he disappears. The man turns out to be Professor Do Jin Woo of the Pilseong Medical Center, who hires her. However, there is something suspicious about him.