Ahn Seo-Yeon

A psychopath's ruthless serial murders have left the entire nation gripped with fear and chaos. A honest and justice-seeking rookie police officer and a veteran detective with tragic past, face against the killer. After the encounter with the psychopath, their lives totally change.

Back at square one as divorcees, four siblings take another shot at love and dreams — after mustering up the courage to convince their parents first.