一美国男子，其警员兄弟遭毒贩所害，而毒贩逃往墨西哥——投奔与贩毒集团勾连之叔父处寻求庇护——该男子身负多样执法/军事背景，遂南下越境，誓要复仇。

The LA police department have a special team of officers with a talent for reducing big-time crime. The team leader has an excellent track record for crime reduction in other big cities, but his methods are unconventional, and so is he - he's a werewolf.

Inspired by the cult classic Tremors movies, locals attempt to coexist with the monstrous, man-eating Graboids, Shriekers, and Ass-blasters, which are now on a "protected species" list.