The Banker

It tells the story of a bank auditor pursuing justice and policy changes at a time when an economic bubble is collapsing. No Dae Ho is an honest and sincere man. He works as a branch manager at Daehan Bank, which is located in a small city. The branch is on a soon-to-be shutdown list. Surprisingly, No Dae Ho is promoted to the auditor at the bank’s headquarters in Seoul. No Dae Ho then faces corruption at the bank.
(Source: koreandrama.org)
~~ Adapted from the manga “Kansayaku Nozaki Shuhei” written by Ryouka Shuu and illustrated by Shigeru Noda.