|"Between a Rock and a Hard Place"|
|Season 4, Episode 8|
|Series episode number||38|
|Air date||August 30, 2017|
"Heart of Stone"
"March of the Colossus"
Things are getting dire in Knighton. Jestro and the Cloud of Monstrox only need the Forbidden Power of Awesome Annihilation in order to reveal what's hidden in Mount Thunderstrox. It can't be nice.
- The Forbidden Power Awesome Annihilation is introduced.