I like the way Koreans make the simplest plot an interesting adventure. As it is the movie seems to have a very straightforward plot. A guy hires a girl to look after his elderly stepfather. A cliche you would say, yes it is, and for the most of the time it seems to follow the typical story. However remember it was made in Korea so not everything is what it seems.
I was impressed with Yeon-Seok Yoo playing the stepson. It was so easy to fall under his charm. Who wouldn't do it?