When the mobilisation order from Nambu comes in, Joe is in the middle of a race. Because he finishes it, he is too late.

On the way to the meeting he transforms. The electrical waves emitted while transforming are intercepted by Galactor and Joe is targeted by the completed Megazainer. His leg is hit by the high frequency and its transformation is undone. Joe falls behind a rock, Dr. Misuno however is afraid of an explosion because of the continuous use and retreats.

Elsewhere, the other four team members arrive in a burnt-down subterranean city. They start searching for the source of some suspicious electrical waves, but it is a Galactor trap.

Joe is late and returns to Nambu's whereabouts, reporting about the weapon which can undo the transformation. Nambu tries to contact Ken, but does not get through. Joe follows the other four team members.

Meanwhile Ken is deceived by Katse's disguise and gets a direct hit by the Megazainer. However, he is saved by a hair's breadth by two members of Red Impulse. They have come upon Nambu's request to save the Science Ninja Team. Jun, Jinpei and Ryu are captured too and are to be exposed to the high frequency. Joe hurries to that place and saves them. Katse keeps aiming stubbornly at Joe and the others. There, the Red Impulse commander appears and fires a rocket. The disguise is thrown away and Ken appears. He plays with the Megazainer with his friends , which overheats and explodes.

The Red Impulse planes pursue the fleeing Katse. Ken watched Red Impulse leave. Joe throws Red Impulse's cap at Ken who looks at the cap he's holding for a long time.