Hook? As in . . . okay, you're definitely not from around here. So, I'll try to do this right. You've probably got phone. I'll send you a file to find out how to use this (it's aimed at people from places without electricity) that also talks about some basic stuff. You've probably also got a card, which can be used for paying for things.
So, the problem -
As best I understand it, there's teenagers who are running around in giant robots to fight various bad guys. Why force teens to do it? I don't know. Why does this place have a crop of baddies? I've got no clue. At one point, they punched someone messing with dimensional stuff, and ever since then, folks like us pop up. They can tell we're being pulled out of time and place (and sometimes we end up going back to our home time and place, sans warning) but there's no obvious way to stop it. I'm guessing they tried to at least make sure we're speaking something that sounds the same, and the money and phone thing.
So - money! Phone that can let you do stuff and teleport around. But we basically slipped between the gaps between worlds and ended up here.
Hi, I'm Tony. Not the usual guy saying hi, but - well - Harry's a friend of mine, so I wanted to check.