What if a stoner turned out to be lethal former secret agent?
It’s a fun premise, and it carries a few laughs. What gives the story a little backbone, though, is the story arcs. A couple learning about each other, a mother-figure caring for her threatened puppy, isolated children finding a family. All of those are arcs that help sustain interest.
Oh, and there’s what feels to me like a lot of violence, but perhaps that it’s just so graphically rendered.