Engine Sentai Go-Onger vs. Gekiranger

Geki Red clashes with Nunchaku Banki soon after returning from his world tour for Natsume's birthday. Geki Yellow and Geki Blue rush to back him up, and the two sides collide across the city as Banki tests his power.

After the Gekirangers are sent into another dimension, the Go-ongers arrive to lend support as the Barbaric Machine Beast departs after his quarry. The teams regroup to assess shifting threats and changing alliances.

Geki Violet and Geki Chopper clear up a misunderstanding with Geki Red, and they bring the group to SCRTC to meet Master Xia Fu. Hant reveals he once met Miki at the Kyoryuya Curry Shop, tying their histories together.

Xia Fu is taken to the site, where he realizes the Gaiark are after the Dōkokugan. He opens a path for the others to follow as Nunchaku Banki overwhelms the team and demands the sealed Long from Jyan.

The Gekirangers reunite with the Go-ongers and together they take out the Ugatts and overwhelm Nunchaku Banki. The two teams' coordination tightens the pressure on their foe as the battle resumes.

In retaliation, Nunchaku Banki steals the Engine Souls. The Pollution Ministers arrive with Meka, who reveals himself as the last fighter from Rinjū Hall.

Using Engine Souls as hostages, Meka tricks Jyan into surrendering the Dōkokugan to save the Engine Souls. He then sends the Rangers back to their world, shifting the balance of power.

Meka pounds the Dōkokugan into an Engine Soul implanted in Nunchaku Banki, while the Gekirangers attempt to teach the Go-ongers the ways of the Gekijūken style. The two teams begin to exchange techniques and philosophies.

Nunchaku Banki arrives to test his new-found power with Meka overseeing. The city braces for impact as the engine-enhanced threat pushes its limits.

The Go-on Wings arrive to remove the two troublemakers from the city and join the battle, using moves learned from Gorie. The united force begins to turn the tide against the engine-powered duo.

Go-on Red rushes to aid Hiroto and Miu, battles Nunchaku Banki, and regains Speedor along with his newly acquired Engine Ken. The other Go-ongers arrive to support and reclaim their Engine Souls. The tide begins to swing in their favor.

The Go-ongers master their Engine Ken style, rejoin Go-on Red and Geki Red, and recover their Engine Souls. They renew their offense against their engine-powered foes and rebuild their team unity.

Long breaks from his seal, discards his robot vessel, and proclaims his plan to become completely free. The threat shifts toward the power behind him as the final showdown looms.

Long Banki battles Reds and Rio as Mere and the Go-on Wings confront Meka. The teams unleash a Super-Super Special combo, EngineOh G9 and GekiRinTohja Wolf power up, and EngineOh G12 with SaiDaiGekiRinTohja join the fray. Long Banki is destroyed and resealed after Dōkokugan is returned to Jyan, while Rio and Mere depart for purgatory and Natsume's birthday party closes the day.