Kokdu: Season of Deity S01 E01 The Season of Kokdu Begins

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.