And Mother Nature reached out and, with a gentle hand, lifts him from one world to the next...

When he wakes up he's in a different Twolegplace.

That's... not how he understood Twolegplaces to work.  But Twolegs are already so confusing that he isn't remotely as surprised as he'd be if a similar thing happened to him in a forest.

What's this one like?

He's near some buildings where Twolegs and kittypets live.

Hm.

Well, he can't go back to ThunderClan's territory, but it would still be ideal to know where he is.  In relation to it.  He shouldn't be able to pick up the Clan scent out here, but Fireheart, traitorous as he is, sometimes snuck out this way; can he catch a whiff of him?  Or the rogues; they traveled often enough through these sorts of areas.

He'll start searching for any scents he recognizes.  He's wary of monsters, and of Twolegs, but not terrified of them.  His speed and strength will protect him; there's no need to sulk and hide when he could instead be figuring out what under StarClan is happening here.

He smells some cats but no familiar cats.

Does there appear to be wilderness in any direction.

Noooot as far as he can tell.

Then he'll pick a direction and walk in it until he finds some.  The Thunderpaths make it very easy to follow a straight line, though the mild convenience doesn't remotely make up for the danger in crossing them.  And 'walk' isn't perhaps the most accurate term, what with the frequent switching he does between that and bolting, dodging monsters.  He has a fair bit of endurance to start with, but it's quite a taxing way to travel.  He grows somewhat less careful as he goes on.

Drive drive drive drive holy shit it's a cat in the middle of the road!

He screeches to a stop in an attempt to avoid hitting it, loses control of the car, and crashes into a tree.