When Loki opens a time portal, he brings in the first Black Knight who need help, while being chased by Morgan le Fay and Mordred.
He decides to lead them to New York City. Loki brings in his army, so he can destroy the Avengers who just came together and take over the Earth, so he has his own kingdom to rule.
Now it is up to the Avengers to stop Loki from inheriting the world
