Rey Mysterio and Enygma try to figure out their new abilities, but they might be making their enemy stronger and bringing Uroboros closer to his goal.
Rey Mysterio is at a disadvantage against Artesano Atroz and his army of alebrijes until Enygma realizes the true power of his and Rey's masks.
Uroboros goads Rey into a rule change for the lucha libre finals, the battle is now a race towards the arena and against time| winner takes it all.
A rock concert and Rey Mysterio's lucha are derailed when Uroboros attacks using the band. Rey, Enygma and Dynamita's usual moves don't seem to work.
At a Lucha Libre convention a legendary championship belt is stolen. Oscar leads the investigation, convinced that Dynamita is guilty.
A local fair turns dangerous when Uroboros tasks Cascabelle with capturing a tiny dog with the ability to transform into a super natural guardian. Amanda, Oscar and Leo are ready to save him, but Rey Mysterio's help makes things worse.
Osa Mayor and Osa Menor, face a rift when Osa Mayor gets all the attention. Uroboros transforms Osa Menor into a giant bear with ice powers. While trying to stop her, Rey Mysterio and Enygma are helped by a mysterious luchadora, Dynamita.
Rey Mysterio vs. The Darkness tells the story of Oscar, a wrestling fan, who will team up with his idol, Rey Mysterio, to face supernatural beings and fight the forces of evil, wrestling villains and characters from Mexican traditions and the world of fantasy.