[s4e1] The Invitation Info

While is the most direct match for that specific episode coding, the title "The Invitation" is also associated with:

: Joins the Ninja on their journey to guide them through the dangers of the tournament. Other Potential Matches [S4E1] The Invitation

The most prominent production associated with the title at Season 4, Episode 1 is the animated series Ninjago: Masters of Spinjitzu . Overview: Ninjago Season 4, Episode 1 While is the most direct match for that

: The mysterious host and primary antagonist of the season. [S4E1] The Invitation