The world is changing rapidly. The Sheriff of Nottingham has forged a pact with the black knights to kill King Richard. But first, the sheriff wants Robin dead more than ever and sets about catching him with the help of his sister and others. Marian and Edward are placed under house arrest in the castle after Gisborne burns their home to the ground. Now with Marian as castle spy, Robin and his gang can continue to help the people of Nottingham and stay one step ahead of the sheriff and Gisborne. As events begin to turn in favor of the sheriff, suspicion of a spy within Robin's gang becomes evident. Could this change the dynamic of the gang or tear them apart for good?