After an open mic night, JB and KG get a message from Michael Keaton who tells them that the time-space continuum has been disrupted at the Ford's Theater in 1850 and only Tenacious D can fix it.
| Actor | Role |
|---|---|
 Jack BlackJB | JB |
 Kyle GassKG | KG |
 Michael KeatonThe Professor | The Professor |
 JR ReedTime Goblin | Time Goblin |
 Justin RoilandAbe Lincoln | Abe Lincoln |
| JJ.D. RyznarJ.W. Booth | J.W. Booth |
 Dan HarmonHeckler | Heckler |
 Paul F. TompkinsClub Owner | Club Owner |
 DeMorge BrownH.G. Wells | H.G. Wells |
 Jen KirkmanMrs. Lincoln | Mrs. Lincoln |
 Ryan Ridley1850's Man | 1850's Man |
| KKelly Kubik1850's Woman | 1850's Woman |
| RRon HasslerColumbus | Columbus |
| JJennifer FlackCleopatra | Cleopatra |
| RRaul B. FernandezRobin Hood | Robin Hood |
| DDavid B. LyonsCowboy | Cowboy |
 Drew HancockEinstein | Einstein |
| AAbed Gheith1850's Extra | 1850's Extra |
| EErin Hill1850's Extra | 1850's Extra |
| SSevan Najarian1850's Extra | 1850's Extra |
| VVatche Panos1850's Extra | 1850's Extra |
| WWade Randolph1850's Extra | 1850's Extra |
| EErin Hill1850s Extra | 1850s Extra |