Athena; Goddess of War (2011) : KDrama - Complete

Athena: Goddess of War (아테나: 전쟁의 여신) is a South Korean espionage television drama series broadcast by SBS in 2010 and a spin-off of 2009's Iris. After having been budgeted at 20 billion won ($17 million USD) like its predecessor, the two series have become the most expensive Korean dramas ever produced.[1][2]
Starring Jung Woo-sung, Cha Seung-won, Soo Ae, and Lee Ji-ah, the series premiered in December 2010 after filming in a number of overseas locations, including Italy, New Zealand, Japan, and the United States. The series is set in the same universe as its predecessor, allowing for select characters from Iris to reprise their roles throughout the story.
Developing on events set in motion in Iris, the story follows the fate of South Korea's ambitious nuclear energy program meant to unify the Korean Peninsula and position the country as the leader in the global energy race. As a result, a new counter-terrorism agency known as the National Anti-Terror Service is instituted and tasked with protecting the nuclear energy technology from potential threats at all costs. Among its ranks is seasoned agent Lee Jung-woo, a skilled operative that has grown tired of his job's uneventful day to day affairs. He soon finds the answer to his dull existence when fate introduces him to an efficacious villain by the name of Son Hyeok and the shadowy organization behind him known only as Athena.