She Stole My Heart (and most of my valuables)

A couple weeks into her adventures in the Boiling Isles, Luz gets invited back to Earth by Eda in order to help with a "special" haul of human junk. Though a bit reticent about going back, Luz agrees to go - Eda seems convinced that she'll enjoy this visit. Imagine her surprise when the portal delivers them to Gravity Falls - which just might be the strangest place she's been to...