AllMovie

Both Frankie (Frankie Darro) and Betsy (Betsy Ross King) survive the airplane crash no worse for wear but are quickly picked up by the Muranian Thunder Riders. Brought before Queen Tika (Dorothy Christy), the kids ridicule Murania in general and the queen in particular and are condemned to spend the remainder of their lives in "the lower dungeons." Happily, the Muranian guards are easily fooled and our young friends manage to evade their captors. An increasingly desperate Queen Tika orders the removal of the electric eye that operates the entrance to Murania, thus preventing Gene Autry) from reaching Frankie and Betsy. Henceforth, the entrance can only be opened from inside the control room, which is guarded by a dangerous radium beam. In order to escape Murania, Frankie breaks the beam and all hell breaks lose.