S4·E15 Mysterions
Core
Aired August 17, 2019
Synopsis
When Theodore discovers Alvin and Simon have a secret club, he promises not to tell anyone if they let him join.
Rate this episode
Your rating is anonymous and can be changed later.
Be the first viewer to rate it.
Frequently Asked Questions
When did Season 4 Episode 15 of Alvinnn!!! and The Chipmunks air?
Season 4, Episode 15 ('Mysterions') originally aired on August 17, 2019.
How long is Season 4 Episode 15 ('Mysterions')?
The episode follows the standard broadcast runtime for Alvinnn!!! and The Chipmunks.
What happens in Alvinnn!!! and The Chipmunks Season 4 Episode 15?
When Theodore discovers Alvin and Simon have a secret club, he promises not to tell anyone if they let him join....