It *pains* me to give this show a 7. I was SO excited for a new rom-com with So Ji Sub. Let me just tell you right now, that if you are hoping for any romance - you will be disappointed. They were leading up to it, and then backed out.
This show started off really strong. The comedy was gold because I was laughing my butt off for over half the show. And then somewhere around the 3/4 mark the spy part of the story went a bit off the rails (convenient plot devices and inconsistencies in writing and editing), the budding romance stalled, the undercover agents started doing dumb things that would totally have gotten them caught, and the PPL was extremely HEAVY handed. I was totally taken out of the story by all of these things.

So Ji Sub was freaking adorable in this - every scene he was in with the child actors made me a puddle of "awwwww!!!"
And Jung In Sung as Ae Rin also did a good job - this was my first time watching her and I liked her. I loved ALL the characters and the actors were great. I have nothing but compliments for the acting. But the romance between the leads was only alluded to at best. So the ending was not as satisfying as I had hoped for because of that.

At most, I might rewatch some of the cute SJS/kid scenes.