Five brave young men and women are recruited by the secret agency Lightspeed Rescue to stop a band of demons from destroying Mariner Bay.

Carter struggles with leading the Rangers in battle as he recalls a traumatic event from his childhood.

The team rushes to help Kelsey's friend Nancy try to land a space shuttle under attack by Diabolico.

Dana is trusted with a special assignment by her father.

The Rangers and Vypra battle it out in new advanced vehicles.

General McKnight tries to replace the Power Rangers with robotic doubles.

Chad faces a dangerous new opponent secretly in league with Vypra.

Dana faces double trouble when the bus she's on is hijacked and a monster causes a volcano to erupt in Mariner Bay.

The Power Rangers attempt to rescue Miss Fairweather from an erupting volcano.

The mysterious Titanium Ranger attacks the Power Rangers.

Captain Mitchell is reunited with his long-lost son.

Ryan does some soul-searching while Diabolico attacks Mariner Bay.

Ryan tries to hide his curse from the team.

Ryan risks life and limb to overcome his curse and help the Rangers battle Diabolico's monsters.

Ryan journeys to an ancient tomb to overcome the curse of the cobra once and for all.

Impus completes his transformation into Olympius, who has captured four Rangers, and infiltrates the Aquabase by posing as them. His plot is uncovered by Carter, who weakens him by throwing him into water, and frees his friends.

When a monster sets a power plant ablaze, Captain Mitchell jumps into action and braves the fire to rescue a little girl. The incident reveals to Carter that it was Captain Mitchell who has saved him from a fire many years back when he was a child.

The demons perform a ritual to return Queen Bansheera to her bodily form. The Rangers interrupt the ceremony, but only enough to bring back the Queen in a deformed state, for which Olympius swears vengeance. Ryan decides that he will leave the Aquabase to go after the Queen, and promises Dana that he will return.

Joel is visiting a young friend, Simon, who invents a telescope to observe outer space. However, Simon discovers that an asteroid is approaching the Earth, which was sent by Olympius to impact Mariner Bay. To stop it, the Rangers initiate the Omega Project, which consists of the Omega Zords - five spacecraft which combine into the Omega Crawler and later the Omega Megazord.

Vypra steals a powerful set of crystals to power a laser which will destroy Mariner Bay. Kelsey teams up with her estranged grandmother to destroy the laser and retrieve the crystals.

Chad works to regain the respect of his disappointed martial arts instructor.

A simulation goes awry when Carter's day repeats itself, and he uses his knowledge of the future, and his new Mobile Armored Vehicle, to prevent the Rangers' deaths at the hands of Olympius, who attempts to use their own Rescuebird against them.

The Rangers take the Max Solarzord to space to prevent spores which have attached to them from going off and releasing toxins into the atmosphere. Meanwhile, Loki and Vypra resurrect Diabolico after they are betrayed by Olympius.

Freezer captures four Rangers, with only Carter left to face him and Olympius. Olympius has his own problems, as Diabolico returns looking for payback. Bansheera keeps Diabolico in check, and sends her son to get Carter, who defeats Freezer and frees his friends with the new Thermo Blaster.

Joel becomes jealous when he mistakes Clark, Ms. Fairweather's brother, for her boyfriend. She brought him to the Aquabase to help design the new Mega Battle Armor, which Joel and Chad use to defeat Infinitor. Ms. Fairweather later assures Joel that Clark was just her brother.

Jinxer loses an egg containing a powerful monster to a quick witted thief who the Rangers are also after. His plot to hold the egg for ransom backfires when the villains attack him, but he is saved by Kelsey, who discovers the thief to have a heart of gold.

Vypra uses Chad's new love interest, a mermaid named Marina, to lure Chad into a trap. When Marina's life is endangered, Chad summons up the strength and courage to defeat Vypra and Loki and rescue her. The two reunite, but only to part ways soon after.

Trakeena comes to Mariner Bay, prompting the Lost Galaxy Rangers to team up with the Lightspeed Rescue Rangers.

The Lost Galaxy and Lightspeed Rescue Rangers join forces to stop Trakeena from destroying Mariner Bay.

Dana helps her teammates overcome a case of amnesia.

The Rangers are transported into the monster underworld, where they face invincible dead monsters. They escape with the help of the Sorcerer of the Sands, who Ryan has found in the desert in hopes of discovering a way to imprison the demons. Olympius remains trapped in the underworld, and Diabolico kills the sorcerer in a battle of spells.

Jinxer manipulates Captain Mitchell into providing Olympius with enough energy to destroy the Rangers after he escapes the underworld. When Ms. Fairweather interrupts the power feed, the star power is destroyed, allowing the Rangers to defeat the demon prince.

Marina returns to ask for Chad's help after her father's trident is stolen, which a water demon uses to drain the water from Mariner Bay. Chad recovers the trident, as well as a captive Marina, and safely returns the two to Neptune, the god of the sea.

The Arachnor monster traps the Rangers in its web forcing Carter to deploy the Trans Armor Cycle: Mega Armor mode.

Dana balances being a glamorous supermodel with her duties as the Pink Ranger.

Bansheera unleashes her magnificent power on friend and foe alike.

Olympius and Diabolico join forces prompting the Rangers to risk using the Lifeforce Megazord powered by their own life energy.

Jinxer launches a crippling attack on the Aquabase.

The Lightspeed Rescue Rangers take their battle against Queen Bansheera into her very lair.