Song Yeo-wool, a widow who has been falsely accused of her husband’s murder, goes on a dangerous path to discover the truth about her husband’s death, while facing great judgement from the society. With this charge and allegation on her, she gets near about losing everything and becomes devastated. Meanwhile, the parents of students of international school where Yeo-wool’s son studies, starts to spread rumors about Yeo-wool.

A story where ten people get the chance to go back in time by one year, but unexpectedly mysterious situations start to arise when their fates are changed and twisted in the process.

It follows the lives of employees at Incheon International Airport.

Set during the Silla dynasty, Sam Maekjong is the son of the fallen king and present queen regent, Jiso, but he has been kept in hiding for protection ever since he was a young boy, when his father was murdered. Over the years the powerful nobles have tried and failed to usurp power from Jiso, causing her to grow wary and later even reluctant to hand the throne over. As her son comes of age, she creates the Hwarang, an elite group of male youth who train in fighting and education. Their existence cuts across the existing power factions and Sam Maekjong is amidst their ranks under the false name Kim Ji-Dwi, unbeknownst to other Hwarang members.