An explosion in Leawood Canyon leads Dex into a trap, where the Boulder Beetle monster begins to sap the Masked Rider powers out of him via negative proton rays. If that's not bad enough, Doubleface has a War Saber and a Reptosect monster waiting to finish him off, and Dex is missing Albee's recital!
One tough student arrives at school, named Big Bubba! Now, Herbie and Dex must show the new kid around, while Count Dregon sends his own new kid to school. Can both bullies be stopped at once?
Nefaria sets into a motion a scheme to ruin Masked Rider's secret identity, by tricking Principal Chalmers into studying Dex's homelife, trying to determine what makes him such an exceptionial student. When his repeated testing fails to expose Dex, Dregon sends down Gork and Fleazoid to attack the city.
The family goes camping and Count Dregon uses the opportunity to launch an attack. The Water Bug is sent to attempt to blow up Leawood Bay Bridge to lure Dex into a trap. Meanwhile, a scientist in the woods catches Ferbus, thinking he's a baby sasquatch.
Our hero seeks gainful employment. The job search is tough, until he lands a gig at the arcade. But Count Dregon unleashes a scheme to stop the new employee. Can our hero take the fizzle out of Count Dregon's plan?
The family is going out to a restaurant to celebrate Hal and Barbara's wedding anniversary, but Ferbus can't come and is left alone at the house. He accidentally locks himself out and gets chased by dog catchers. Meanwhile, Dex has to battle a new monster and Double Face, who is armed with the powerful Super Sword.
Patsy becomes suspicious of Dex, which gives Count Dregon an excellent idea. Then, Nefaria has a plan. And King Lexian sends Donais on a mission, bring the powers of Super Blue to Dex. Can our hero prevail against Dregon's evil forces?
After a dubial showdown between Cyclopter and the Masked Rider, Count Dregon considers Nefaria's next evil plan. When Ferbus takes a bite, strange things begin to happen. Can this evil spell on Ferbus be reversed? and can are hero Dex save the day again????
Dex, Molly and Albee enter a battle of the bands competition and begin rehearsing. But Dex has bigger things to worry about when he has to fight the Blue-Fanged Louse, an energy absorbing monster.
Dex is running a little late, and Mr. Chalmers and the Coach discuss the state track championship. Then, "somebody special" flies by. Count Dregon hatches a evil plan. Can our hero Dex save the day?
The Stewarts become contestants on a hit TV show. Now, Count Dregon is steamin' mad and Maggots are sent to the studio to stop the show. But, the show must go on. Can our hero stop the Maggots?
A heat wave hits the city, making Ferbus get sick. The evil Heliotoid is to blame. Can our hero cool things off?
The kids enjoy a day of dirt bike racing and Ferbus enjoys a few treats. Then, Ferbus is left behind and Dex goes looking for him. But, Count Dregon has a surprise for our hero. Can he defeat Dregon's evil forces? Also, Chopper gets over his jealousy of Dex riding another motorcycle real fast when Dregon creates a tractor beam strong enough to transport Dex to the Spiderbase and into his evil clutches. It's up to Magno and Chopper to rescue Dex before Dregon discovers a way to steal his powers.
The kids catch dance fever. Meanwhile, Count Dregon plans to defeat the Masked Rider with an all-new Insectivore. While the dancers compete for the big prize, Count Dregon has a big surprise for our hero. Can he stop the enemy's evil threat?
A student from another country visits Leawood High. While the young visitor gets a tour, Count Dregon prepares a new threat for our hero. Now, the Masked Rider must battle Dregon's new monster. Can our hero stop his evil plan?
It's Christmas time and a homesick Dex learns more about the holiday. Meanwhile, Count Dregon's crew plots to ruin things for everyone by having Nefaria sneak Maggots into the Stewart house to kidnap Santa Claus. Can Dex's Masked Rider powers save Christmas?
The Stewarts plan a day at the pool and Count Dregon plans a way to defeat the Masked Rider and rule the world. While the kids enjoy the water and Ferbus enjoys thehot dogs, the enemy begins his evil plan. Can our hero stop it?
The kids start a clean-up campaign in Leawood and it's just another day at the office for Count Dregon. Then, Nefaria supervises a little cleaning herself. This gives Cyclopter another idea for an evil monster. Can our hero stop the monster?
The Stewarts' Grandma drops by for a visit. Meanwhile, Count Dregon sends his own visitors, who kidnap Grandma. Can our hero save Grandma from a pair of monsters?
Donais, having come to Earth to give Dex the added power of Masked Rider Super Gold, is now his friend's enemy, the Robo Rider. Can our hero battle his own friend, and reverse the power of the crystal?
Lexion sends Denais on a mission to Earth. Then, he's kidnapped by Maggots, and turned into the evil Robo Rider. Can our hero rescue his friend?
A video wiz at the Cosmos has Albee bummed. So, Dex faces off with the arcade ace. Then, while Ferbus discovers bananas, Dregon sends a monster to Earth. Can our hero stop Count Dregon's monster?
Count Dregon plans to turn the Stewart family into insect warriors. Now, Ferbus must find Dex fast before Dregon's evil plan starts to bug the Stewart family. Then, Dex must summon his team. Can our hero save the Stewarts from Dregon's threat?
The Stewart family prepares for an alien attack. Then, Count Dregon sends Nefaria to recruit a couple burglars. Now, Ferbus is in danger of being kidnapped. Can our hero protect his friend?
Dex is ready to start driving, but he gets a big surprise when his instructor is revealed to be a disguised Insectivore.
Dex battles the Destructosphere, but he finds his Masked Rider powers aren't going to be enough against Count Dregon's forces. Taking King Lexian's advice, Dex uses his powers to create the Combat Chopper and Magno to aid him in the fight. Meanwhile, a group of Nefaria's Maggots attack Leawood High.
As Dex and his friends continue the fight to free Edenoi, Count Dregon sets his sights on Earth and sends down the powerful Destructosphere. When Dex learns of Dregon's plans, he travels to Earth to stop him and is taken in by the Stewart family before the battle begins.
