Recent college grad Jaime Reyes returns home full of aspirations for his future, only to find that home is not quite as he left it. As he searches to find his purpose in the world, fate intervenes when Jaime unexpectedly finds himself in possession of an ancient relic of alien biotechnology: the Scarab.

Following the events of Age of Ultron, the collective governments of the world pass an act designed to regulate all superhuman activity. This polarizes opinion amongst the Avengers, causing two factions to side with Iron Man or Captain America, which causes an epic battle between former allies.

A quest that begins as a personal vendetta for the fierce Cimmerian warrior soon turns into an epic battle against hulking rivals, horrific monsters, and impossible odds, as Conan (Jason Momoa) realizes he is the only hope of saving the great nations of Hyboria from an encroaching reign of supernatural evil.