![](https://image.tmdb.org/t/p/original/greamH3Xe4jvAySICzV167yfZ5r.jpg)
![](https://image.tmdb.org/t/p/w200/ezHR68DZeyKgRraAZd3eGCgmIl.jpg)
There is a line that cannot be crossed.
A member of Coast Guard Platoon 23, Private Kang monitors a high-infiltration stretch of beach lined with barbed-wire fencing. Driven by the belief that killing a spy is the highest honor, he waits for a chance to prove his worth.