A drama detailing the life of King Gwanggaeto the Great, who restored the glory of Goguryeo by wresting power back from Baekje, which had invaded Goguryeo prior to Gwanggaeto's birth and dominated East Asia under the rule of King Geunchogo.

This drama commemorates the soldiers who gave their lives in the Korean War, fought between North and South Korea between 1950 and 1953, and is designed to remind people that the heavy cost of human lives far outweigh any national glory. Lee Hyun Joong is a South Korean squad commander and war veteran who is dedicated to protecting the lives of the soldiers serving under him, despite his jaded outlook. His chance meeting with Lee Tae Ran on the battlefield stirs memories of the past, but she is now a lieutenant of the North Korean army.

Park In Soon is an ex-murder convict who accidentally killed a person in high school and served time in prison for her crime. In her school days, thanks to her outstanding looks, she received a lot of love from people. However, after the murder incident, she wears tinted glasses and is afraid to meet people's eyes. However, she's a tough woman who hasn't lost hope, and longs for happiness. Yoo Sang Woo is In Soon's childhood friend who moved away. They lost touch with each other. Sang Woo puts In Soon on a high pedestal but when he finds out that In Soon killed somebody, he is shocked and tries to distance himself from her.