Call to Adventure: Killmonger's father is killed by T'Chaka, starting the his hatred/resentment to Wakanda's kings.
Meeting the Mentor: Killmonger joins with Klaw to steal the Vibranium from the museum.
Crossing the Threshold: Killmonger kills Klaw and enters Wakanda, revealing that who he is and challenging T'Challa
Road of Trials: Killmonger faces lots of trials but manages to "kill" T'Challa, the former king.
The Reward: Killmonger is king after defeating T'Challa. He receives the power of the Black Panther and sends Vibranium out to the world.
Return with Elixir: In this stage of the hero's journey the "balance is restored". Here, Killmonger is killed by T'Challa, and the peaceful balance of Wakandais restored. Also, in this stage, things can be healed or shared. Killmonger caused T'Challato share some Vibranium with the world.