Inside a rectangular ring, two teams of fighters face off against each other in a fierce competition. When one fighter runs out of steam, unable to continue, his teammate steps in to take his place... This is Sparta! For Nikolai, a former MMA champion, this new spectator combat sport may be the only chance to return to professional fighting and to dig his way out of all the problems that crashed down on him three years ago: a fight to defend his girlfriend's honour followed by a stint in prison, his girlfriend's betrayal, and his coach's refusal to let him back on the team. With his true friends behind him, the athlete challenges the world and stakes his entire future on his next fight.