S1·E9 Macaque

The mysterious and powerful Macaque shows up in the city, helping MK thwart an evil cloud of smoke. He offers to train MK. But the new teacher is actually an old enemy of the Monkey King and is trying to siphon the Monkey King's powers from MK to defeat his fabled arch nemesis. It's up to MK to rise up and help the Monkey King before all his power is gone.