An aggressive race of aliens took over Planet Earth and humanity's at its end, living in giant bunkers below ground. Young Military rookie S.U.M.1 (Iwan Rheon) is sent to the surface to save a group of unprotected survivors.
| Actor | Role |
|---|---|
 Iwan RheonS.U.M. 1 | S.U.M. 1 |
 André HennickeMac | Mac |
| TTim WilliamsBase (voice) | Base (voice) |
 Rainer WernerV.A.X.7 | V.A.X.7 |
 Norman ReedusK.E.R.4 (voice) | K.E.R.4 (voice) |
| GGökdeniz A. ÖzcetinHEX | HEX |
| ZZoe GrisedaleStraggler Woman | Straggler Woman |
 Niels-Bruno SchmidtStraggler Man | Straggler Man |
| LLesley Suzanne DeanM.A.T.E. (voice) | M.A.T.E. (voice) |
| NNick Baker-MonteysDriver (voice) | Driver (voice) |
| CChristian PasquarielloV.A.X.7 (voice) | V.A.X.7 (voice) |
| GGuy HoyerHänschen Klein (voice) | Hänschen Klein (voice) |