Power Rangers : Season 12

Former Veteran Power Ranger Tommy Oliver takes a teaching job at the city of Reefside years after escaping from an ordeal with the evil and mysterious reptilian monster Mesogog, and is assigned to look after three detention students: Conner McKnight (soccer star), Ethan James (hi-tech prankster) and Kira Ford (singer). During a trip to the museum, the trio stumbles upon a secret hideaway and find the magical Dino Gems. Kira rejects her Gem soon after, only to be abducted by Mesogog's forces.

Kira manages to escape from Mesogog's lair, and the mad scientist reveals his powerful Bio Zords and unleashes them on the city. Tommy grants the students the means to become a new generation of Power Rangers and sends them out to tame the wild creatures. They succeed, and combine their newfound Zords into the Thundersaurus Megazord to halt the evil warrior Zeltrax's attack on the city and save the day.

Conner resigns his position as the Red Ranger when his Ranger duties interfere with his dreams of being a soccer star and cause him to miss an important try-out. However, he reconsiders after saving a little girl from harm and defeating Mesogog's Birdbrain mutation with a little help from his fellow Rangers and the Raptor Riders given to the Rangers by Tommy. Meanwhile, Mesogog kidnaps Tommy to force him to unleash the power from within a stone.

Mesogog kidnaps Tommy to find out how to access a mysterious power source. As Hayley searches for a way to rescue Tommy, the Rangers watch a video diary on the history of the Power Rangers with footage from the past eleven seasons. This is the 500th episode of the Power Rangers.

The Rangers rescue Tommy, who steals the stone and discovers that the power within to be another Dino Gem. Harnessing the unique powers of this black gem, Tommy reignites his past and becomes the Black Ranger. To defeat Mesogog's latest creation, the Rangers are sent the Cephala Zord as a boxing glove.

Kira is reunited with her old friend and celebrity, Kylee Styles. The snobbish teenage star falls victim to the youth-draining Donkeyvac monster, and Kira comforts Kylee by reminding her of better times while the others confront this new menace. When Kira helps her friends take down Donkeyvac, everyone's youth is restored, and Kylee and Kira reunite and perform a duet at Hayley's Cyberspace.

Mesogog's latest plan takes advantage of Ethan's obsession for a video game by transporting Ethan into the game's virtual world where he meets a strange wizard and the even stranger Triptoids. Kira also gets sucked into the game but the pair manage to return to the real world, and discover that the Triptoids and the wizard have followed them. After the Rangers deal with the Demagnetron monster, Hayley sends the wizard back to the virtual world.

In his effort to enhance himself, Zeltrax accidentally creates his own "son" who calls himself Golden Rod. While Tommy's former partner Anton Mercer, adoptive father to Trent Fernandez, purchases the Cyberspace Cafe, the Rangers head to City Hall to stop his plans only to run into Zeltrax and Golden Rod. As the Thundersaurus Megazord struggles against the enlarged Golden Rod's might, Tommy steps in and destroys the son of Zeltrax with his Brachio Staff. Afterwards, the city councilwoman prevents

Dr. Oliver and Principal Randall take the students on a dig, using that pretence to hide their true motive of finding a nearby Dino Egg. Pulling a bait and switch on the Rangers, Randall, who is actually Mesogog's henchwoman, Elsa, in disguise, manages to steal the real Dino Egg and hatches the Dimetro Zord. After a brief battle, the Rangers manage to tame the Dimetro Zord, who helps to defeat Scorpex, the latest monster with the saw blade ability

When famous actress Nikki Valentine is captured by Mesogog to be used as a part of his evil schemes, the Rangers must save her and face off against Mesogog's newest monster named Megaldor. Meanwhile, Hayley uncovers a new Dino Egg, which hatches into the Stego Zord.

When the powerful White Dino Gem goes missing from Mesogog's fortress, a monster is sent to lure out whoever stole it. Mesogog's plan works and the renegade White Ranger appears on the scene, easily defeating the monster and forcing the Rangers to retreat in the face of his might.

Conner and Kira are sent to locate a new Dino Egg, only to find it in the White Ranger's possession. Hayley alerts the team to the presence of the Angor monster, and the Thundersarus Megazord duels with this new foe while Tommy goes to confront the White Ranger and retrieve the Dino Egg. While the Megazord is successful in defeating the monster with help from the newly-hatched Parasaur Zord which gives the megazord the scissor blade, Tommy fails his mission and the Drago Zord is hatched.

The White Ranger steals the Rangers' Stego Zord and combines it with his Drago Zord to form the Dino Stegozord, which promptly blasts the Thundersarus Megazord apart. While a trio of auxiliary Zords are sent into battle, Conner dukes it out with the White Ranger and unlocks his Super Dino Mode in the process. Later, Tommy discovers the White Ranger's true identity as Trent, but is encased in amber before he can tell the others.

As the Rangers attempt to free Tommy from his amber prison, Trent starts causing trouble. In battle against the Rangers, Trent manages to stop himself from hurting a demorphed Kira and later tells her that he is the White Ranger. While Kira is initially shocked, she offers to help him but he declines and decides to leave the city, citing that he is too dangerous to stay around. The ankylo zord reveals itself and beats the dino stegazord with the ability of another drill.

As Trent leaves the city, he notices a meteor crashing into the woods. The Rangers show up to investigate, hoping that the meteor will help free Tommy, and are greeted by Tyrannodrones and the Rojobot monster. During the ensuing battle, the meteor blasts everyone with strange energy that reveals the hidden sides of everyone's personalities. Conner becomes a brainac, Ethan, a jock, Kira turns into a typical valley girl that loves shopping, Cassidy becomes a nerd and Devin becomes the coolest kid

Trent, now completely overwhelmed by the evil influence of his Dino Gem, joins forces with Mesogog. After tricking the Rangers into believing he has reformed, he presents them with brand new Dino ATV's as a gift of goodwill, but Tommy discovers his ruse. Meanwhile, Mesogog is revealed to be Anton Mercer's unwilling alter-ego.

A failed, fossilized experiment of Tommy and Anton's is revived and brainwashes Kira into retrieving its missing piece. Once it is complete, the Fossilador monster wreaks havoc on Reefside and battles the incomplete Thundersarus Megazord. Once free from Fossilador's control, Kira saves the day with the help of the Pterazord.

Ethan is bullied by one of his classmates while Trent and Zeltrax forge an uneasy alliance to destroy their enemies. Tommy tries to reason with the vengeful Zeltrax after discovering Zeltrax's true identity as Terence Smith aka Smitty who was his old friend that was lost in an accident in the company he worked for but was saved and reconstructed by Mesogog. and Trent is singled out by Mesogog, who warns Trent not to betray him again.

When Conner, Ethan, and Kira find a show about Power Rangers in Japan, Conner is appalled at its portrayal of them. Meanwhile, the Japanese Rangers must go up against a money hungry monster named Ka-Ching.

Kira gets an internship on the Funky Fisherman Show, only to realize how unhappy she is with her new job. Meanwhile, Elsa kidnaps the fisherman's sidekick, Marty the Mackerel, and transforms him into Mad Mackerel to battle the Rangers.

Mesogog attempts to destroy Trent when Zeltrax, through Copyotter, frames the White Ranger for destroying his lab. However, Anton Mercer manages to break through and destroy the White Dino Gem's hold over Trent. Trent returns the favor by promising to use his powers for good. Later, Zeltrax reveals an evil, soulless clone of the White Ranger.

Zeltrax manifests the White Terrorsaurus from the evil White Ranger clone. While Tommy and Trent search for a powerful new energy source, Conner is left discouraged when his plan to defeat the Terrorsaurus costs the Rangers their Dinozords. Sensing the new power calling out to him, Conner steps up to accept the Shield Of Triumph and with it, the power to become the Triassic Ranger. With a whole new level of power at his command, Conner easily destroys the Terrorsaurus.

Kira scores a deal with a famous record producer, but isn't pleased with her new image. Meanwhile, as Hayley tries to get a new vehicle up and running, Tommy and Zeltrax duel in a fierce battle aboard the evil cyborg's Aerial Assault Vehicle.

Kira tries to get Cassidy work as a reporter for the local TV station, which falls victim to Mesogog's newest creation. As the monster infiltrates the satellites in an attempt to destroy Jupiter, and thus cause such an incredible impact as to leave the Earth devoid of human life, the Rangers must prevent Mesogog from accomplishing his goal and reverting the Earth to the age of the dinosaurs.

Ethan is hit with a string of mysterious bad luck after uncovering an ancient curse and awakening Pharaoh Tutenhawken. The Rangers battle Tutenhawken in their search to break the curse, and the Pharaoh takes Cassidy as his queen. With his fellow Rangers at a tactical disadvantage, Ethan comes to the rescue with his new Hovercraft Cycle.