Wormhole

Wormhole is the second team-up between SPD and Dino Thunder.

Synopsis
Gruumm travels into the past and recruits Zeltrax in his plan to conquer Earth before the formation of S.P.D. The S.P.D. Rangers must follow him and teamup with the Dino Rangers in order to stop them before the wormhole closes and they're trapped in the past.

Plot
Emperor Gruumm is confronted by Omni to prepare for his arrival on Earth. Gruumm takes the Terror through a wormhole 21 years into the past. Kat alerts the Rangers of Gruumm's temporal trip into the wormhole. At Reefside High, in 2004 - Conner, Ethan, Kira, and Trent witness a spaceship hovering over the school. Gruumm has arrived in his ship, the Terror to take over the Earth without interference from S.P.D. Commander Cruger sends Jack, Bridge, and Z on a mission to follow Gruumm through the wormhole. The Dino Rangers go into the woods in search of the Terror. Rather than finding the Terror, they are confronted by Zeltrax and the Tyrannodrones. Jack, Bridge, and Z travel into the wormhole in search of Gruumm. As the Dino Rangers fight Zeltrax, the Terror appears and beam him aboard. Gruumm insists that Zeltrax defeats the Power Rangers, and Zeltrax assures him that it would be his pleasure. Jack, Z, and Bridge reintroduce themselves and inform the Dino Rangers of Gruumm's plans. Meanwhile as the wormhole closes, the other S.P.D. Rangers prepare to join up with the others before the others are trapped in the past. Meanwhile, Tommy appears as the Black Ranger in a battle against Zeltrax. The Dino Rangers teamup with the S.P.D. Rangers to fight Zeltrax, Troobians, and their Foot Soldiers. Zeltrax leads an army of three monsters that created by Mora, all three levels of Krybots, and the Tyrannodrones. Gruumm and Mora watch as the rest of the S.P.D. Rangers show up and his forces join together against all 12 Rangers. Tommy and Doggie meet for the first time and lead the Rangers against their opponents. Kira, Syd, and Z team up to display girl power while Sam and Trent work together using White Ranger power. Bridge, Ethan, and Sky display teamwork Green/Blue Ranger style as the Black Rangers, Tommy and Cruger, defeat Zeltrax just before he retreats. Jack and Conner both activate their Battlizers to take out Mora's creations. The Power Rangers assemble the Z-Rex Blaster and the Canine Cannon to finish off the Foot Soldiers. Before the S.P.D. Rangers return to the future, Doggie erases their and the Dino Rangers' memories.

Primary Cast

 * Brandon Jay McLaren as Jack Landors (S.P.D. Red Ranger)
 * Chris Violette as Sky Tate (S.P.D. Blue Ranger)
 * Matt Austin as Bridge Carson (S.P.D. Green Ranger)
 * Monica May as Z Delgado (S.P.D. Yellow Ranger)
 * Alycia Purrott as Sydney Drew (S.P.D. Pink Ranger)
 * Michelle Langstone as Kat Manx
 * Olivia James-Baird as Mora
 * John Tui as Doggie Cruger (Shadow Ranger)
 * Brett Stewart as Omega Ranger (voice)
 * Rene Naufahu as Emperor Gruumm (voice)
 * Derek Judge as Blue-Head Krybots (voice)
 * James Gaylyn as Orange-Head Krybots and Zeltrax (voice)

Minor Cast

 * James Napier as Conner McKnight (Red Dino Ranger)
 * Emma Lahana as Kira Ford (Yellow Dino Ranger)
 * Kevin Duhaney as Ethan James (Blue Dino Ranger)
 * Jeffrey Parazzo as Trent Fernandez (White Dino Ranger) & Dr. Tommy Oliver (Black Dino Ranger) (voice only)

Errors

 * While Bridge is correct in stating that Conner, Kira, and Ethan's memories were erased in their previous encounter, they were taken from 2005, whereas the current encounter is in 2004, thus the trio wouldn't be familiar with the SPD Rangers at this point anyway. However, the SPD Rangers possibly didn't know that they were a whole year back from when Conner, Kira, and Ethan actually met them.
 * Trent's morphing call is different in this episode than it was during Dino Thunder, in which it was "White Ranger, Dino Power". However, in this episode he uses the same call as Conner, Ethan, and Kira, "Dino Thunder, Power Up".
 * While in 2004, Bridge states that he was only born last week. This would make him 21 years old during the events of the season although the B-Squad cadets are said to be teenagers.