It is worth a watch, but weirdly if you said this series was filmed in the year 2003, I would believe you - minus the implementation of an app. Something about the show looked and felt old.

The message of the series however was excellent. It shows that you can really make ideas work if you have a bond with people who are all aligned on a goal, and emphasising decent values and virtues to attain the goal - people often lose their morality in the name of capitalism, but this series tells you that there's always another way.
It's a good show to watch if you're making a decision in your career and want to be reminded that it's ok to do the right thing.

I loved the character development of Jin-gyu, played by Kim Seon-ho.

I'm not too much a fan of the lead actresses, but Lee Min-young and Kim Hye-ri in the show I must say are incredibly beautiful.