Ghosts - S17.E15

The Rangers arrive at Omega City only to discover it was all a trap set by Venjix. In the midst of trying to escape, they are ambushed and overwhelmed by Venjix forces, but are saved by Rangers Gold and Silver who, this time, fight off their assailants in person. The seven Rangers then return to Corinth, where Rangers Gold and Silver finally reveal themselves as Gem and Gemma, long lost friends of Dr. K from the Alphabet Soup facility.