First of all, I will be honest that almost dropped this show watching the first two episodes, because I thought it would be one of the trending "relationship-between-human-and-robot" stories. However, I returned to this show after I was unexpectedly spoiled by YouTube and realized my guesses were wrong.
This show focused on human relationships rather than real-life problems that happen in airports. Typical plots in airport dramas such as airplane accidents and troublesome passengers were covered, but briefly. Other than the relationship between the top two, the security couple, the manager couple, the lonely friend, some stressful bosses were covered.

The con reasons I gave 7/10 overall for this drama are the following:
- There was nothing deep or surprising. Basically, some ruined relationships in the past were fixed with some gangsters involved. They could have been fixed easily by simply communicating.
- Too many unique characters, and some were irrelevant to the story. Scenes like witnessing a husband cheating, workplace rumors, and relationship with some dark forces... these incoherent incidents messed up the main plot.
- Ending sucked. All those emotional struggles surrounding his disability became unnecessary in the end, because no one cared about it including him in the end right?

Like it said during the show, everyone is unique and have different views and opinions, despite working at a place where they serve customers who only care about themselves, because it's an airport. You can think of each other as "someone passing by in your life", and you will eventually forget about the encounter. I really liked this message.

It was really heartwarming to watch, with the help of some great OSTs. They really matched the theme of this show. However, it all ends up to this feeling, as if I rid on a ferris wheel instead of a roller coaster. Everyone carried stresses in the middle, but they all got along in the end.