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.
| Title | The Invitation |
|---|---|
| Genres | Animation Action & Adventure Sci-Fi & Fantasy Comedy |
| Release Date | 2015-02-23 |
| Episode Runtime | 00 Hours 22 Minutes |
| Season Number | 4 |
| Episode Number | 1 |
| Production Companies | LEGO, WildBrain Studios, Wil Film ApS, Wil Film, Cartoon Network Studios |
