Joel learns about teamwork as the Lightspeed Rangers meet their new hardware developer Mss Fairweather and use their new Lightspeed Zords to coordinate several rescue attempts to safeguard the city and it's endangered citizens from an assault by Diabolico's Magmavore monster
Kelsey makes friends with a woman named Nancy, who is preparing to pilot a Space Shuttle. Diabolico's latest monster creates several devastating tornadoes that endanger not only Mariner Bay and the Rangers, but Nancy's space shuttle.
Dana becomes frustrated with Captain Mitchell's apparent lack of trust in her ability as a Ranger when she is ordered to act as an escort on a routine mission, whilst the remaining team battle to prevent Vypra's forces from acquiring a powerful fuel cell, but is Dana's mission as unimportant as she believes?
An obnoxious martial artist called Brian is humiliated by Chad in battle. Vowing revenge, he asks Vypra to make him her pupil, she agrees and casts a spell over him, making him an equal to Chad. Meanwhile, Kelsey is injured in an explosion when she recklessly follows a powerful monster into an abandoned building, and into a deadly trap
The testing of a new, but unstable morpher leads to it's rejection, but when the morpher is later stolen from the Aquabase, The Rangers are soon confronted with problems presented not just by Vypra and her attacking hoards, but by the startling power and might of the renegade Titanium Ranger, whose identity shakes Captain Mitchell to his very core
In retaliation for Ryan'sbetrayal, Diabolico visits the Ranger in his sleep and carves a cobra tattoo on his back. He cautions Ryan that each time he morphs, the cobra will slowly move up his back until it reaches his neck, once there, it will strike and kill the Titanium Ranger. Demonite unleashes a new clone of himself on Mariner Bay and attacks alongside it, leaving the Rangers coping with two equally powerful adversaries
Joel's younger cousin Simon, a keen astronomer, discovers a large asteroid is on a collision course with Earth and warns Joel of his findings. Olympius, responsible for luring the asteroid towards the planet, attacks Mariner Bay and creates an eclipse of the sun, plunging Earth into darkness. The Rangers use their new Omega Zord fleet in a dangerous bid to destroy the asteroid by planting explosive devices on it's surface and detonating them
Kelsey reunites with her estranged Grandmother as Vypra steals several crystals she requires to power a weapon capable of destroying Mariner Bay
In the aftermath of a tragic battle with Olympias that leaves his fellow Rangers dead, Carter is propelled back in time and is given the chance to alter the course of the day
The Rangers are forced to head into deep space to prevent spores that have become attached to them from pollinating and releasing a deadly toxin into the atmosphere. Meanwhile, Loki and Vypra find themselves betrayed by Olympius, prompting them to seek the council of an old friend...
Carter is left on his own when the frigid Freezer captures his fellow Rangers. As Carter risks his life attempting to rescue them with the newly developed Thermo Blaster, Olympius finds his own hands tied with the return of a familiar force eager to slay him...
On the planet Mironoi, Leo, the Red Galaxy Ranger, struggles against an army of phantoms led by the monstrous Tri-Skull. He eventually escapes to Earth and warns Lightspeed Rescue of a threat to both of their worlds and the very universe. The mortal enemy of the Galaxy Rangers, Trakeena, with the aid of Olympius, has been kidnapping a selection of Mariner Bay civilians in a bid to produce enough energy to restore her grotesque and limitlessly powerful insect form, and she is close to succeeding...
Dana is left on her own when her fellow Rangers are stricken with amnesia whilst battling the latest Demon...
While out on a rescue mission, Dana is approached by fashion designer Koko Kashmere to become the Glitz Girl. After she takes up the offer to pay her way into medical school, doing various fashion gigs get in the way of Dana's Power Ranger duties, and her friendship with Kelsey.
The Queen uses Vypra's life energies to restore her body to it's full form. The limitlessly powerful Bansheera then manipulates the last of her active Generals, Loki, into confronting the Rangers at Mariner Bay Stadium, intending to lure them all into her domain
Jinxer places a Battling card on one of the Ranger's Megazords, allowing Bansheera's' foot soldiers to stage a "Trojan horse" coup on the Aquabase and begin to cripple it from within. Seizing control of the Lifeforce Megazord, the Battlings slowly dissect the base piece by piece, causing major flooding, rendering the trapped Lightspeed Rangers helpless. Meanwhile, cut off from the remainder of the team, Carter and the returning Ryan face the might of a hijacked Omega Megazord as Queen Banshera makes preparations to restore her fallen army of demons to life
The Lightspeed Rangers struggle to escape the crippled Aquabase and destroy the hijacked Lifeforce Megazord before it can do further damage. Queen Bansheera's palace is placed in the center of Mariner Bay as she begins the ceremony to restore the armies trapped in the Demon Underworld to life. Carter and Ryan succeed in halting The Omega Megazord's rampage, but can they reunite with the remaining Rangers in time to prevent the resurrection of their fallen foes and end Bansheera's dominion?