|Three Portals Down|
|Season 3, Episode 27b|
|Air Date||December 31, 2021|
|"The Problem with Pentagurps"||"Welcome to Odd Squad"|
- The episode title is a reference to the American rock band 3 Doors Down.
- This episode premiered on CBBC in the UK on October 28, 2021.
- This episode will premiere in the US as part of PBS Kids Family Night for the weekend of December 31, 2021.