Prince Adam (Nicholas Galitzine), a young man raised on Earth, discovers he is the long-lost heir to the planet Eternia and the only one capable of stopping the ruthless Skeletor (Jared Leto) from seizing ultimate Power.

After unlocking the secrets of the legendary Power Sword, Adam transforms into the mighty He-Man and returns to his home world, where a brutal war threatens the fate of Castle Grayskull. Alongside the fearless Teela (Camila Mendes), the warrior Duncan (Idris Elba) and the Sorceress (Morena Baccarin), Adam must embrace his destiny and battle dark magic, monstrous enemies and his own fears before Eternia falls into darkness forever.