The Go-Ongers' support robot Bomper contacts the Gokaigers, revealing that Sosuke needs back up in Gunman World to deal with one of the surviving members of the Gaiark Clan. However, Captain Marvelous refuses to help out.

The Gokaigers defeated Chirakashizky in order to stop Gaiark's attack on the Gunman World, but end up falling into one of their traps! Turns out that another Gaiark member is attempting to take over Human World! But having saved Gunman World, they now find out that the dimensional door to back to Human World has closed!