The Wrong Unit

I DON'T KNOW WHAT THE HUMANS ARE SO CRANKY ABOUT. Their enclosures are large, they ingest over a thousand calories per day, and they're allowed to mate. Plus, they have me. An Autonomous Servile Unit, housed in a mobile/bipedal chassis. I do my job well: keep the humans healthy and happy.
"Hey you."
Heyoo. That's my name, I suppose. It's easier for the humans to remember than 413s98-itr8. I guess I've gotten used to it.
---
Rob Dircks, bestselling author of Where the Hell is Tesla?, has a "unit" with a problem: how to deliver his package, out in the middle of nowhere, with nothing to guide him. Oh, and with the fate of humanity hanging in the balance. It's a science fiction tale of technology gone haywire, unlikely heroes, and the nature of humanity. (Woah. That last part sounds deep. Don't worry, it's not.)