"The blue sea" is an action drama that tells the story of a mysterious young man who lost his memory. Jo Eun Hee is a female soldier in the navy who works with Sung Ki Soo to carry out special missions under UDU (Underwater Demolitions Unit) Sung Ki Soo is a navy lieutenant who is also a professor at the non-commissioned officer department who is the first to see through the identity of the young man who lost is memory.

Sorry we have no overview for this episode! Help us to improve our docs.

Sorry we have no overview for this episode! Help us to improve our docs.

Sorry we have no overview for this episode! Help us to improve our docs.

Sorry we have no overview for this episode! Help us to improve our docs.