Yes the Race, and yes Flesh eating zombies.
However, the script and acting elivate this to a fantastic character study.
For a start, watch it for Sean Bean's role, the almost real-life psycho schizophrenic he plays, every word muttered from his Sheffield accent, twisting other peoples comments to suit his twisted mind.
Secondly, the characters inner stories, all make sense in a dystopian back-drop governed by a self-interests only rule.
If you sit through the first episode, you'll be hooked.
Highly recommended