An earthquake stirs up yet another adventure for the Oz Kids. What begins as an innocent bus trip for Frank (the Wizard's son) turns into a wild underground ride for all the kids as they encounter dragonettes, merry-go-round mountains, an enormous teddy bear and more!
| Actor | Role |
|---|---|
 Julianne MichelleDot Hugson (voice) | Dot Hugson (voice) |
 Bill MumySam (voice) | Sam (voice) |
 Remy Ryan HernandezHarriet (voice) | Harriet (voice) |
 Jonathan Taylor ThomasScarecrow Jr. (voice) | Scarecrow Jr. (voice) |
 Benjamin SalisburyTin Boy (voice) | Tin Boy (voice) |
 Bradley PierceBoris (voice) | Boris (voice) |
| SShayna FoxBela (voice) | Bela (voice) |
 Alex ZuckermanFrank Diggs (voice) | Frank Diggs (voice) |