They love heat, the sun. Dart hates it. It hurts him.

don't come crawling back, saying,

"Oh, my God, Dustin, I'm so sorry for being mean to you back in 8th grade.

What?

What?

It's about d'Artagnan.

This is the reason I was late for class.

- What are you doing? - I told him to stop. We need to go.

- So that would mean... - Dart is from the Upside Down.

- We have to take him to Hopper. - I agree.

Easy-peasy.