Sergeant Kim at Military

Private First Class Kim Won-hun has an awkward start as a drone operator, trying to fit into the current military while regaling "back-in-my-day" tales.

An overwhelmed Won-hun navigates a large-scale drone drill, intense physical training and a well-stocked post exchange.

Now a rifleman on the East Coast Strike Team, Won-hun is ecstatic about his barracks with an ocean view, but can his excitement survive endless training?

It's another exhausting day for Won-hun as he faces grueling combat fitness training with a hawk-eyed instructor and an intense night patrol.

Won-hun endures a tough day as an Air Force armament specialist, arming aircraft, loading flares and dining at a "two Michelin-star" dining hall.

Won-hun takes to the skies for his long-awaited first flight — but in the pitch-dark night, nerves turn to nausea. Can he make it back safely?

Won-hun trades combat training for kitchen duty. But the endless chopping and washing dishes turns out to be just as demanding as military drills.

After crying over endless green onion prep, Won-hun faces field cooking. In full military gear, he must furiously stir-fry spicy pork.

Tensions flare between Won-hun and newly assigned Private Jo Jin-se as they face brutal winter training. Will they learn to work together?

Won-hun and Jin-se take on a mountain warfare exercise in the snow, finding brief joy in field rations before a legendary drill pushes them to the limit.