The father (Russell Crowe) of the young Sergei Kravinoff (Aaron Taylor-Johnson) advocates "the strong are kings" and implements brutal and cruel wolf education on his offspring. During a hunt, Sergei was attacked by a wild lion and abandoned by his father. When he was dying, he accidentally mutated because of the lion's blood and became a hunter with extraordinary power, Kraven. From then on, he embarked on the road of revenge against his father, and the appearance of the rhino man seemed to foreshadow a bigger conspiracy.