Classic UT Sans was kidnapped; location unknown:

A search team was dispatched and it was revealed that Sans and Papyrus were in a crate being shipped by Classic Chara. A conversation through phone was recorded:

Sans: help me. i'm being shipped with papyrus.

Frisk: You told me you wouldn't complain about ships...

Sans, revealed to be inside a shipping crate saying "Fandom Shipping": i don't think you understand...

Chara is shown to be the driver.