Set in the late 1920s, The Age of Shadows follows the cat-and-mouse game that unfolds between a group of resistance fighters trying to bring in explosives from Shanghai to destroy key Japanese facilities in Seoul, and Japanese agents trying to stop them.
Best friends Dong-sik and Seung-ho have a crush on the same girl at school. When she's found raped and murdered, the main fishy is someone the boys know very well, and it tears their friendship aside.
Da-Jin and Jae-Young have been in an all too comfortable relationship for the past six years. Although they don't live together, their apartments reside side by side. But trouble brews for the couple when they begin to fall for their respective co-workers. Can Da-Jin and Jae-Young's relationship survive these outside temptations?
Ju-eyon and Seong-tae have been best friends ever since they first met each other 10 years ago. But in one night their 10 year friendship comes crashing to the ground after they sleep together. The comfort and security of marriage is a siren call, and the two decide to forego their ideals to spend their first day as man and wife. However, their perfect lover soon appears right in front of them: A sexy editor appears to seduce Seong-tae and an advertising director appears to tempt Ju-yeon. With a single smile they turn the newlyweds dream into a nightmare. Even after only a few days, they soon find themselves faced with the worst choice of their lives as they struggle to reach happiness.
