[MattEmily]

Jungle Fury becoming RPM.

Summer shows up in the city that Jungle Fury resides in through a portal with Dr. K. Summer explains that they both come from Corinth, a world that is a waste land that is nothing but remains, they're the only two survivors, a computer virus called the Venjix virus has wiped out everything else including the ones they love.

Summer is still Ranger Yellow and she still keeps her same personality as does Dr. K.
The Venjix virus has crossed over into Jungle Fury's world so the five Rangers try to fight off the next attack but even the Grinders are too much for them even with the assistance of the Spirit Rangers. Summer morphs and drives them off.
Summer asks the Jungle Fury Rangers if they can help them out with fighting off the Venjix Virus but the others don't see how the can do such a thing since their powers aren't a match for those creatures. Dr. K. explains how she can give them the necessary powers in order to match their firepower and even exceed it at times. The five of them agree however Summer reminds Dr. K how they don't have another access code for a female member. Dr. K explains that she actually does have additional access codes that would fit all five Jungle Fury Rangers so she gives each one the proper Morpher.

Ranger Red = Casey
Ranger Blue = Theo
Ranger Green = Dominic
Ranger Black = RJ
Ranger Silver = Lily

Basically RPM remains the same plot except there's no stories of Venjix implanting his virus into all of the citizens. He still creates Tenaya 7 and she still has a relation to a Ranger but this time her relation is to Summer. Ranger Gold becomes a hyperactive male but I can't think of a name for him.

Zords have the same story. Dr. K. has the same story with Alphabet Soup including with her creating the virus just because she wanted to go play outside.
Venjix is actually destroyed at the end of the season because she discovers an Anti-Virus that will wipe him out completely but the Rangers need to use the RPM Ultrazord in order to strike him with it.