Park Jae-hwi

In a small army unit, far from the outside world, there is a young soldier hiding a secret he doesn't want to share. Every time he stands guard during the night watch, he sees smoke rising from the forest. However, for some reason, it seems no one else can see the smoke.

An inspector from the Educational Rights Protection Bureau (ERPB) who is authorized by the government to use physical intervention and unconventional methods to discipline delinquent students and reform the educational system.

Once rivals in school, two brilliant doctors reunite by chance — each facing life’s worst slump and unexpectedly finding solace in each other.