The episode starts out with Grinders attacking a mother and her baby in a playground. Could the playground be like a homage to MMPR, where they fought Putties in playgrounds? Ziggy and Scott arrive and have a discussion about one-liners and fight. The baby flies in the air and Scott saves it and Ziggy dance-juggles the mother while fighting the Grinders. Ziggy is about to fall just a foot down and everyone freaks out and Scott saves him with the baby's stroller. A new bot has been sent down, Ziggy and Scott morph and Flynn, Summer, and Dillon are fighting Grinders elsewhere. They then morph and meet up, Dr. K sends them coordinates and they stand above where the bot is traveling.
Ziggy tries out the new Croczord but Dr. K made a miscalculation when she down-morphs Croc Carrier and the Croczord becomes huge and hits a tower in the city. People run for cover. Scott has to make a choice: go to the tower to help people or confront the bot that is burrowing underground. Scott has a flashback to himself in a aviator simulation and later his brother Marcus had to make a choice for his team and his dad wanted it on his desk in a red envelope pronto. They were then attacked by Venjix and Scott had to learn hard. So Scott makes a decision and they go to save the people from the tower. The bot escapes in the process.
Back at the base, Ziggy says that he and Dr. K are both sleepy and must sleep, Dr. K is too busy to do so and admits she has made one mistake before. Later, we find Ziggy sleeping on cereal, when K explains they need something for a un-manned Croczord. Summer backs her up. They need a overthruster core reactor. Dillon wants to know where they can get the thruster. Dr. K says only Scott knows. In a flashback, Marcus tells his crew (including Scott) that they need to transfer the core and he doesn't know what it is but he knows what it can do so they must do it. Scott asks about the exist plan and then the place shakes. Scott's dad tells Scott to stay out of his brother's way and it is an order. Back in current time, Scott says he doesn't take orders from him anymore.
Scott needs the coordinates and his dad is sure he will be caught by Venjix. He wants to go alone and his dad is against it. He says that Marcus knows too that he is not ready for 'this kinda thing.' Scott steals the CD with the info. Alarm blares in the base. The Rangers find out that Scott has left 2 hours ago from the dome city to get what they need, Dillon wants to go after him. Dr. K tells them if they do, Venjix will find out. She plays for them the last transmission of the Eagle squadron. Scott was in air and Marcus was hit. Scott was then hit as well. Scott's plane was dropped down and he was alone in the desert and Summer came for him, they met for the first time and she took him on his motorbike to go to the dome city.
Scott gets what they need and destroys a Grinder and finds the red envelope. A bunch of Grinders are destroyed by Scott's dad. He is brought to the city by his father and army crew. Scott gives the overthruster to his dad to give to Dr. K. His dad scolds him for going and saying if Marcus was here... Scott clarifies that Marcus would have done it himself. Scott morphs and fights the bot and the grinders. The trio destroy the bot with their three-weapon blaster and he grows huge. Dr. K has the overthruster (The colonel and his cadet are in the base) and Black and Green call the Croczord (for some reason, Black and Green both have Engine Cells).
They then transform Black, Green and Croczord together to create ValveMax Megazord (sounds like Outback). They destroy the monster. Scott's dad and the other officer find Dr. K sleeping. Back at the Colonel's base, Colonel gives his officer the CD and asks him to do it right this time. He then finds the red envelope on his desk and finds out that Marcus had recommended Scott.
I believe the show is first doing a "Lost" kind of thing where each episode covers the character's past or backgrounds through flashbacks. This one is done pretty well. In the Japanese footage, the monster could 'rust' thing and rusted up the trio's Engines so they couldn't use them for the next episode. This aspect was not used but the tower in trouble aspect was used. And good continuation by having Scott's hair like it was in the first episode, in cornrows, dreads, whatever its called.