I Am Soldier follows Mickey Tomlinson (Tom Hughes, About Time), a military chef, who attempts the most dangerous military selection known to man: The Special Air Service (S.A.S.) selection. The S.A.S. is the UKs Black Ops, where only the major elite get in. Mickey has more military experience than simply being a chef, something he doesn't reveal to the other candidates. But as Mickey struggles throughout the process, he discovers that there is still only one way you can really prove yourself: in combat.