During World War I, a group of British miners are recruited to tunnel underneath no man's land and set bombs from below the German front in hopes of breaking the deadly stalemate of the Battle of Messines.
| Actor | Role |
|---|---|
 Sam HazeldineWilliam Hawkin | William Hawkin |
 Tom Goodman-HillHellfire Jack | Hellfire Jack |
 Kris HitchenHarold Stockford | Harold Stockford |
 Elliot J. LangridgeGeorge MacDonald | George MacDonald |
 Sam ClemmettCharlie MacDonald | Charlie MacDonald |
 Joseph SteyneShorty | Shorty |
 Sonny Ashbourne SerkisHenry | Henry |
 Anna MaguireJane Hawkin | Jane Hawkin |
 Andrew ScarboroughColonel Fielding | Colonel Fielding |
 Douglas ReithField Marshal Haig | Field Marshal Haig |
| JJake WheeldonCaptain Leonard Graves | Captain Leonard Graves |
| PPhilip CorreiaSecond Lieutenant David Kelly | Second Lieutenant David Kelly |
| AAlexa MordenMargaret | Margaret |
| MMark KittoDoctor | Doctor |
 Benjamin FarryGerman Officer | German Officer |
| EEthan WilkieNewspaper Boy | Newspaper Boy |
 Paul RiderMr Rodgers | Mr Rodgers |
| PPaul MorrisGerman Miner | German Miner |