Black Knight Season 1

In 2071, where people depend on respirator masks to breathe. Only 1% of the human race has survived, and a strict social stratification has been established in the now deserted lands of the Korean Peninsula. Delivery drivers play a crucial role within this system, and for refugees, becoming a delivery driver is their only hope for survival. The series is about a legendary delivery driver "5-8" with exceptional battle skills, and a refugee who dreams of following in his footsteps.