The main characters species in one timeline get trapped in a volcanic explosion meaning they would burn to death. However in the end they didn't actually die due to time travel meaning they were saved from that happening.
No actual cannibalism but illusions to it as the main characters are shaped like donuts but don't know donuts exist so when a character eats a donut (jam of course to have the effect of blood) the characters are all horrified as they think that someone just ate one of them.