3 episode arc at some point in the season:

The Phantom Beasts have been brought back to life. Dai Shi has them prove their loyalty by capturing the three masters. The Phantom Beasts capture the masters and use the masters to create the Spirit Rangers.

The Phantom Beasts control the masters and call forth the Spirit Rangers. They look and fight exactly like Power Rangers. Our heroes are in for a real fight as they face the spirits of their own masters. RJ makes a device that will momentarily stop the Spirit Rangers. But he knows that something more has to be done in order to save his dad and the other masters.

The Spirit Rangers could be the end of our heroes if something isn't done. RJ takes the risk of destroying his father. Trusting his instincts, he finds that his dad was prepared if this should happen. Together with the help of his dad, RJ saves the other Masters from the grip of evil.