S05:E48 - The Temple on Haunted Hill

The Ninja hear of another way to learn Airjitzu - from the ghost of Sensei Yang at his haunted temple - but there’s a warning; if you are trapped in it by sunrise, you will become a ghost, too. Meanwhile, doubting she’s a Water Ninja, Nya quits her training to take Ronan to her Samurai X cave…but has a run in with Moro.