About this season
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.
Episodes (5)
1. Episode 1
Aired 9 October 2017 • 19 min
"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.
2. Episode 2
Aired 10 October 2017 • 17 min
3. Episode 3
Aired 11 October 2017 • 16 min
4. Episode 4
Aired 12 October 2017 • 18 min
5. Episode 5
Aired 13 October 2017 • 16 min