[Terminated on 9/30/23] In February 1953, Captain Kang Eun-pyo from the South Korean Army, gets transferred to the east front line. There, the 'Alligator' company, an elite squadron, continues to fight to defend Aerock Hill. Kang must find a spy who has passed letters between the South and the North via military messages. When he arrives at the base, however, the "elite" squadron is nothing like what he thinks it would be.