It had taken too long for Mettaton to get Sophie somewhere safe. Carrying her hadn't taken much time at all, especially with the jets Alphys had built into this body. Getting her to stay there had been another matter.

He'd found Tauriel, but arguing her into watching Sophie instead of going with him to rescue Grune had taken still more time. In the end, it had been Sophie herself who had won the argument for him with her sobbing. If he'd ever wondered what a hollow victory felt like, well...now he knows.

As fast as he can, risking a crash with every corner he took, he flies back to Grune. If she's hurt--if that child has killed her--

There's light ahead down this final hallway, too bright to be sunlight. He can't make it out; he's too focused on getting there, until--

"Oh, my god!"

What did Grune just do?