Agents with a formerly-secret worldwide law-enforcement organization work to safeguard the world from the lesser challenges now too-frequent for superheroes alone.
Good enough, although so far it's one of these episodic shows which has a new problem every episode.
I watched three episodes and liked it, but I took a long break and watched a fourth and couldn't figure anything out or get interested again. I can't recommend this except for those who are heavily hooked on those first few episodes and who intend to properly binge-watch it all.
S.H.I.E.L.D. - Strategic Homeland Intervention Enforcement and Logistics Division