Finn and his friends must come together as a genuine band in order to open the gate of the Door Lord and get back their taken items.
| Title | What Was Missing |
|---|---|
| Genres | Animation Comedy Sci-Fi & Fantasy |
| Release Date | 2011-09-26 |
| Episode Runtime | 00 Hours 11 Minutes |
| Season Number | 3 |
| Episode Number | 10 |
| Production Companies | Frederator Studios, Cartoon Network Studios |
