I actually believe TVB did a really good job with the first few episodes, and I actually thought this would become TVB black horse drama (i.e. the one that everyone sleeps on but is actually good). However, I am very disappointed to ay that the rest of the series did not live up to my expectations.

Firstly, there were too many characters, not that it's a bad thing if it were written well. All the characters are different and distinctive. In fact, the way those big cast was introduced was very good. However, their story arcs were very badly written, and unnatural. As much as I like to see TVB's "green leaf" actors get more spotlight, if they don't have a good role, there is no point.

The beginning, was very "The Academy"-like, but the later half of the story became more drama, and less "police", which is disappointing as there aren't many airport police procedurals. You'd think that after "Life on the Line" they could actually produce a well balance procedural drama.

The build up to the final villain was very cliche and unrealistic, which had a disappointing end.

Overall it is just an okay drama, with unfulfilled potential. I wish I could just rewrite the series, because there were so many interesting characters that did not get their story told properly, just because the writers decided to put a load of bs love story.