Races and Species:
The Guardians of the Galaxy ended up on Attilan after being brought there by Lockjaw during the time when the Inhumans have come down with a plague that causes Terrigen Crystals to start growing from their body. The Alpha Primitives were also shown to be fully crystallized yet still alive. During this time, Maximus had apparently made a cure for the plague while also putting Black Bolt under his mind-control. When Ronan the Accuser arrived, Maximus swore the Inhumans allegiance to the Kree. Ronan the Accuser went back on their deal and decided to destroy Attilan. Upon confiscating the mind-control helmet, Ronan then had Black Bolt order Lockjaw to teleport him and Star-Lord to the Terrigen Crystal caverns underneath to destroy Attilan from below. Upon Star-Lord using the CryptoCube to undo the plague on the Inhumans and the Alpha Primitives, Black Bolt flew into space and used his voice to cripple Ronan the Accuser's ship. Afterwards, Medusa thanks the Guardians of the Galaxy on Black Bolt's behalf.
|Star-Lord (Peter Quill)||Will Friedle|
|Groot||Kevin Michael Richardson|
|Drax the Destroyer||David Sobolov|
|Maximus the Mad||Diedrich Bader|
|Ronan the Accuser||Jonathan Adams|
- The title of the episode is a reference to the song "Crystal Blue Persuasion" by Tommy James & the Shondells.