This was a great drama for me - I love tech, engineering, and Jung Jae Young - so what's not to like? As usual, he creates a laid back character that it takes a while to get to know. The plot is surprisingly devious, full of business intrigue. The cast is excellent throughout. This isn't a drama that will grab you with fireworks, noisiness and unnecessary frills and flashy effects. It relies on character development and story line to draw you in, so it's not for the impatient. Watch a few episodes and then decide if it's for you.