The Invitation
Run Time: 22 mins
Air Date: Mon, 23 Feb 2015
Average Rating: ⭐ 6 (1 votes)
Cartoon NetworkSeason 4 - Episode 1
Average Rating: ⭐ 6 (1)
After discovering that Zane may still be alive, the ninjas learn that they must compete in a Tournament of Champions if they wish to see him again.