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Leaving the maze with the real Book of Deception, Jestro feeds several books of the same kind to the Book of Monsters to create the fake NEXO Knights. They raided and destroyed the city of Bork. The real knights come and all the citizens shooed them off for something they didn’t do. Ava and Robin hear the news and are shocked by what they did. The monsters trick the citizens again by turning the Evil Mobile into the knights’ Rolling Fortrex. When they tried to raid again, a Black Knight blocked their way and defeated them with ease. King Halbert then contacts the knights and said that if they don’t come up with any evidence that they didn’t destroy the cities, he’ll be shutting them down. Several times the fake knights tried to attack a city, the Black Knight is there and defeats them in less than a few blows. The real knights came in afterwards in the real Fortrex and conquered over their fake selves. Soon, they come to the fact that Robin was in fact the Black Knight in disguise!